Defendant-Appellant Jose Luis Zavala was convicted after trial of two counts of possession with intent to distribute over five kilograms of cocaine, and two counts of conspiracy to possess with intent to distribute over five kilograms of cocaine. 21 U.S.C. §§ 841, 846; 18 U.S.C. § 2. The *568 district court sentenced Zavala to 235 months of imprisonment, five years of supervised release, and a $5,000 fine. The district court entered judgment on February 28, 2007, and Zavala filed a timely notice of appeal.
According to Zavala, the district court erred in denying his motion to suppress certain testimony of John Moreman, an agent of the Drug Enforcement Administration (DEA). Moreman searched Zava-la’s cell phone after Zavala’s vehicle was stopped by the police, and he testified at trial regarding the subscriber number (the 6323 number) that he obtained through this search. In addition to claiming that Moreman’s testimony regarding the 6323 number should have been suppressed, Za-vala also claims that the cell phone records pertaining to the 6323 number should have been suppressed as fruit of the poisonous tree. Based on this alleged constitutional error, Zavala claims that the district court erred in denying his post-verdict motion for new trial because there is a significant possibility that Moreman’s testimony regarding the 6323 number had a substantial impact upon the jury’s verdict.
In response, the Government argues that (1) the police had probable cause to arrest Zavala at the time his cell phone was searched, so Moreman’s testimony regarding the 6323 number was admissible because it was obtained incident to arrest; (2) Moreman had consent to search the cell phone; (3) the search of the cell phone was equivalent to a license check; (4) More-man’s testimony regarding the 6323 number is admissible because an independent source — Javier Pompa-Hernandez — identified this number, which purged any taint associated with the constitutional violation; (5) probable cause to arrest Zavala developed after the search of his cell phone, so Moreman’s testimony regarding the 6323 number was admissible under the inevitable discovery exception; and (6) any constitutional error is harmless beyond a reasonable doubt because the overwhelming weight of the evidence supports the jury’s guilty verdict.
We conclude that the district court erred in denying the motion to suppress More-man’s testimony regarding the 6323 number. We agree with the district court’s legal conclusion that the initial stop of Zavala’s vehicle was an investigative stop based on a-reasonable suspicion of drug trafficking activity, not probable cause. The search of Zavala’s cell phone was not the equivalent of a license check. Because Moreman did not have consent or probable cause to arrest Zavala at the time of the search, the search was unconstitutional. Moreman’s testimony regarding the 6323 number should have been suppressed because the exclusionary rule prohibits the introduction of testimony concerning knowledge acquired during an unlawful search.
The independent source and inevitable discovery exceptions to the exclusionary rule do not apply in this case. Furthermore, the Government has not carried its burden of demonstrating that this constitutional error was harmless beyond a reasonable doubt. The jury might have convicted Zavala based, in whole or part, on the inadmissible testimony of Moreman. Thus, we reverse the judgment of the district court and remand for a new trial.
I. Factual Background & Procedural History
A. Factual Background
In an appeal from the denial of a motion to suppress, we may consider both the evidence admitted at the suppression hearing and at trial.
United States v. Jones,
*569 1. The Co-Conspirators
Zavala was convicted of two counts of possession with intent to distribute and two counts of conspiracy. The possession and conspiracy counts related to conduct occurring during two distinct time periods: (1) conduct occurring between September 2003 and June 2004; and (2) conduct occurring on July 16, 2004. Other indicted co-conspirators relevant to this appeal include Mario Luna, Jose Rivera, and Javier Pompa-Hernandez. Both Luna and Pom-pa pled guilty and testified against Zavala at trial.
2. The Arrest of Luna
Moreman obtained information from a cooperating source that Luna wanted to purchase 210 kilograms of cocaine in Houston. Two undercover DEA agents met with Luna in the parking lot of a restaurant. While in Luna’s vehicle, Agent Felix Gonzalez observed a large amount of cash in a partially opened bag. After agreeing to contact each other in the future regarding the drug transaction, the agents followed Luna from the restaurant to his home (the High Manor residence), where a search uncovered forty kilograms of cocaine, drug ledgers, and a cell phone. The district court denied Luna’s motion to suppress the evidence discovered at Luna’s home on June 25, 2004, concluding that exigent circumstances justified the war-rantless entry and that Luna gave a voluntary oral and written consent to search. The constitutional validity of that search is not before us in this appeal.
According to Moreman, Luna’s drug ledgers contained several entries for a man named “Gorro.” The total amount associated with Gorro was 132 kilograms of cocaine. The name Gorro was also found in Luna’s cell phone, and the agents later determined through subpoenaed phone records that Gorro’s subscriber number (the 4886 number) belonged to Rivera. Unlike the phone records for the 6323 and the 9418 number, the phone records for the 4886 number identified the name of the individual subscriber. 1 The DEA initiated surveillance at Rivera’s residence on Mira-mar Shores. Based on the information obtained from the search of Luna’s residence, the agents suspected that..Rivera was distributing cocaine in Houston.
Luna pled guilty and testified against Zavala at trial. He testified that he distributed cocaine in Houston and that Pom-pa transported money to Luna’s boss, Daniel Elizondo, in Mexico. Luna recorded information regarding his drug transactions in a ledger, and he always used nicknames for the parties involved. He explained that Rivera’s nickname was Gorro and that Zavala’s nickname was Nejo. According to Luna, his cell phone contained an entry for Nejo. Only Luna, Pompa, and Elizondo knew Zavala by that nickname. Luna testified that Zavala purchased cocaine from him on several occasions. Luna acknowledged that he never referred to Zavala by name in his drug ledger or in the factual basis of his plea agreement. Thus, Luna’s first public disclosure of the identity of Nejo was at Zavala’s trial. On cross examination, Za-vala attacked Luna’s credibility and argued that Luna identified Zavala as Nejo in order to obtain a lesser sentence.
3.The Arrest of Zavala and Pompa
On July 16, 2004, Moreman followed Rivera as he left his Miramar Shores resi *570 dence. When he stopped at a red light, Moreman dialed the phone number for Gorro and observed that Rivera answered his cell phone. 2 The agents followed Rivera to his other residence on Tall Timbers. Rivera drove a Ford pickup and parked in the driveway. Moreman had no information — from a confidential source or otherwise — that there was going to be a drug transaction at the Tall Timbers residence on that date.
After Rivera drove the pickup into the driveway, Moreman initiated fluid surveillance of the location. 3 The agents’ observations were being broadcast over police radio. Because Moreman’s knowledge of the events occurring at the Tall Timbers residence was based on fluid surveillance, he was unable to recount every detail of the interaction among Rivera, Pompa, and Zavala.
Shortly after Rivera- parked in the driveway of the Tall Timbers residence, Zavala and Pompa arrived in a Ford Taurus. At that time, the DEA agents did not recognize Pompa or Zavala from any previous investigation. The Taurus and the pickup parked next to each other and faced the same direction. Zavala was driving the Taurus, and Pompa was sitting in the passenger seat. The agents observed Pompa remove some unidentified items from the Taurus, place them into a cardboard box, and put the box into Rivera’s pickup. The DEA agents did not see Zavala load or move the cardboard box; he was merely standing outside the Taurus. Agent Richard Hicks testified that he could not observe the shape or the identity of the items that Pompa placed into the cardboard box. However, the DEA agents suspected that they were witnessing a drug transaction between Rivera, Pompa, and Zavala.
Shortly thereafter, the agents observed Rivera leave the Tall Timbers residence, enter a mechanic’s shop down the street, and exit carrying a large pair of pliers. Rivera drove back to the Tall Timbers residence and again parked next to the Taurus. The agents suspected that Rivera retrieved the pliers in order to open a secret compartment in the Taurus containing contraband; however, the agents did not actually see what Rivera did with the pliers. Two surveillance teams followed the pickup and the Taurus as they left the Tall Timbers residence. At that time, the agents did not know the location of the cardboard box or its contents.
Because the agents suspected that they had just witnessed a drug deal, Moreman instructed a uniformed officer to stop the Taurus on Beltway 8 in Houston. Zavala did not commit a traffic violation before being pulled over. Zavala and Pompa were removed from the Taurus and immediately separated. Their wallets and cell phones were removed from their persons and placed on the roof of the Taurus. Moreman arrived on the scene shortly after the stop. Hicks and Moreman initially interviewed Pompa. A few minutes later, Hicks left Pompa and began to interview Zavala. At some later point, Moreman also interviewed Zavala.
At trial, Moreman testified that he interviewed Zavala for twenty minutes and searched his cell phone. He testified that Zavala’s subscriber number was the 6323 number. He also identified the subpoenaed phone records for the 6323 number. Moreman agreed that he had to “open[] *571 up the phone to see what the number was.” According to Hicks, Zavala gave oral consent to search the vehicle after the initial stop, but the agents did not uncover any drugs during this first vehicle search. It is unclear whether the search of Zava-la’s cell phone occurred before or after Zavala first gave his oral consent to search the Taurus. Instead of claiming that the search of the cell phone was consensual, Moreman testified that the search was incident to arrest.
Zavala and Pompa gave conflicting stories about the owner of the Taurus and the purpose of their trip. Both men denied the existence of any cardboard box. During the interview, Moreman realized that he recognized Pompa from an earlier undercover drug operation, which had not resulted in a drug seizure or Pompa’s arrest.
After the initial stop of the Taurus, the agents approached Rivera in the front yard of his Miramar Shores residence, where they questioned him about his activity at the Tall Timbers residence. After the first vehicle search of the Taurus was unsuccessful, the agents handcuffed Zava-la, put him into the back of a police car, and transported him to the Miramar Shores address where Rivera was being interviewed. Another agent drove the Taurus to the Miramar Shores address. Rivera consented to follow the officers to his Tall Timbers residence and to a search of his detached garage and shed. Zavala remained in the police car at Miramar Shores while the police searched at Tall Timbers; he was probably handcuffed and definitely not free to leave.
After a narcotics detection canine alerted to a red suitcase at Tall Timbers, Rivera confessed to the agents that Zavala and Pompa had just delivered twenty-four kilograms of cocaine to him at the Tall Timbers address earlier that day. Rivera had assisted the two men in retrieving the cocaine from the Taurus, and then he transported it back to his Miramar Shores residence. Rivera directed the agents to the twenty-four kilograms of cocaine in the attic of his Miramar Shores residence, and then told the agents that there was an extra kilogram of cocaine stuck inside the Taurus because he was not able to remove it with the pliers. According to Rivera, Zavala initially contacted him about the cocaine transaction. Moreman testified that the canine alerted to the suitcase at the Tall Timbers residence about one hour after the initial, stop of the Taurus.
After Rivera confessed, the agents asked Zavala for oral consent to search the Taurus a second time, which was given. According to Moreman, Zavala gave his second consent to search about one hour and fifteen minutes after the initial stop of the Taurus. Hicks testified that it could have been more than one hour and thirty minutes. Other testimony indicated that it could have been even longer. The second search was more thorough than the first. During this second search of the Taurus at Miramar Shores, the agents located one kilogram of cocaine in a secret compartment. Zavala also signed a consent form that allowed agents to conduct a warrant-less search of his Ann Louise residence, which uncovered $27,000 in cash. Hicks testified that the search of Zavala’s residence occurred about four hours after the initial stop of the Taurus.
Pompa testified that he rode with Zavala in the Taurus to deliver cocaine to the Tall Timbers residence. He also identified Za-vala as Nejo. According to Pompa, he called Zavala on his cellular phone on July 15 and 16, 2004. Pompa identified Zava-la’s cell phone number as the 6323 number and stated that the calls he made to Zavala related to the drug transaction. He stated that he did not call Zavala on any cell *572 phone number other than the one he identified. Pompa also testified that his cell phone was immediately confiscated by Moreman when he was stopped in the Taurus. On cross examination, Zavala questioned Pompa’s credibility and motive for testifying against him.
Ip. The Testimony of Skidmore
Patricia Skidmore, a DEA intelligence research specialist, analyzed the subpoenaed cell phone records from the cell phones recovered from Luna, Pompa, and Zavala. She compared the entries listed for Gorro and Nejo in Luna’s cell phone with entries from the drug ledgers and found similarities. Skidmore identified the phone records pertaining to the 6323 number. She stated that the 6323 number belonged to Zavala and was recovered “because of the cellular telephone that was seized by Agent Moreman” on July 16, 2004. Skidmore also testified that the 9418 number was associated with the entry for Nejo in Luna’s cell phone. Based on her analysis of the phone records for the 9418 number and the 6323 number, she testified that those two cell phones “could have been carried by the same person.” Skidmore prepared a chart, which was admitted into evidence, indicating that the 9418 number called Luna thirty-seven times, called Rivera eleven times, and called Pompa zero times. The 6323 number called Luna zero times, called Rivera eighteen times, and called Pompa forty-five times.
With respect to her analysis of Luna’s drug ledgers, Skidmore identified a total of 256 kilograms of cocaine attributed to Nejo for the period of September 2003 through May 2004. The total amount of cocaine documented in Luna’s ledgers exceeded 3,100 kilograms.
B. Procedural History
1. First Motion to Suppress
Zavala filed a motion to suppress the one kilogram of cocaine found in the Taurus and the $27,000 found at his Ann Louise residence. Zavala claimed that he was arrested without probable cause and that his second consent to search the Taurus and his consent to search his residence were tainted by this illegal detention. In response, the Government argued that (1) the consent was valid; and (2) probable cause to arrest existed at the time of the initial stop.
The district court held a pre-trial suppression hearing, which was divided into two parts. The first part of the hearing dealt with the events of June 25, 2004 (Luna’s arrest), and the second part dealt with the events of July 16, 2004 (Zavala’s and Pompa’s arrest). On July 16, 2004, Zavala’s vehicle was searched twice and his home was searched once. According to the Government, Zavala gave oral consent for the two vehicle searches and written consent for the residence search. After the first vehicle search failed to produce any drugs, the district court found that the agents handcuffed Zavala, placed him into the police car, and detained him for one hour and thirty minutes before Rivera confessed to Zavala’s participation in the twenty-five kilogram drug transaction. According to the district court, probable cause to arrest Zavala did not develop until Rivera confessed.
After the district court heard the testimony at the suppression hearing, it considered the arguments of counsel. The prosecutor’s central argument was that the initial stop of the Taurus was based on a reasonable suspicion of drug trafficking activity, not probable cause. The prosecutor argued that this reasonable suspicion was heightened during the questioning of Zava-la and Pompa, which justified their contin *573 ued detention, and it rose to the level of probable cause after Rivera confessed to the drug transaction. The prosecutor briefly mentioned the possibility that probable cause to arrest existed at the time of the initial stop. However, he later informed the district court that it was the Government’s position that the initial stop was a Terry stop. The prosecutor argued that a one hour and thirty minute detention was necessary to confirm or dispel the reasonable suspicion that justified the initial stop of the Taurus.
The district court ruled that the initial investigative vehicle stop was permissible under
Terry v. Ohio,
2. Second Motion to Suppress
After the district court granted Zavala’s first motion to suppress the one kilogram of cocaine and the $27,000, Zavala filed a second motion to suppress three cell phones confiscated from Zavala on July 16, 2004. The Government argued that the cell phones were admissible because they were recovered at the time of the first vehicle search, which the district court had previously held was constitutional. The district court did not conduct a hearing on this second motion to suppress, but instead carried the motion until the trial.
At a pre-trial conference regarding the second motion to suppress, the Government stated that it would not seek to introduce the physical cell phones, including the cell phone associated with the 6323 number. Zavala stated that his motion would be moot if the Government did not introduce the physical phones or the fact that Zavala possessed those phones.
At trial, the Government did not seek to admit the physical cell phones into evidence. However, the Government argued that Moreman should be able to testify regarding his search of one cell phone and his observation of the 6323 number. The Government stated that it was “critical to our case to show that he had a phone on him showing contact with some of the individuals and not other of the individuals.” Zavala objected to the introduction of this evidence. After concluding that Zavala’s first consent to search his vehicle extended to a search of his cell phone, the district court ruled that Moreman’s testimony regarding the 6323 number was admissible.
S. Motion for New Trial
During deliberation, the jury submitted Jury Note #2 to the district court: “It is a fact that phone 281-XXX-9418 and 832-XXX-6323 belong to Jose Luis Zavala? We don’t understand the objections from lawyers on it.” In response, the district court stated that it could not answer this factual question, that the arguments of counsel .are not evidence, and that the jury must refer to its own recollection and interpretation of the evidence presented at trial. After the jury returned a guilty verdict, Zavala filed a motion for new trial, arguing that the district court erred in admitting Moreman’s testimony regarding the 6323 number. The motion was denied without reasons.
II. Analysis
A. Standard of Review
The district court’s legal conclusions under the Fourth Amendment are
*574
reviewed de novo, but its factual findings are reviewed for clear error.
United States v. Ibarra,
B. Probable Cause to Arrest
The Government argues that the DEA agents had probable cause to arrest Zavala when his cell phone was searched by Moreman. A district court’s legal conclusions, including determinations of reasonable suspicion and probable cause, are reviewed de novo.
Ornelas v. United States,
An investigative vehicle stop is permissible under
Terry
only when the officer has a reasonable suspicion supported by articulable facts that criminal activity may be afoot.
United States v. Martinez,
Based on the information obtained from Luna and the DEA surveillance team, Moreman had a reasonable suspicion that Pompa and Zavala were engaged in drug trafficking activity at the Tall Timbers residence. Thus, it was constitutionally permissible for Moreman to order the uniformed officer to stop the Taurus despite the fact that Zavala did not commit any traffic violation.
See United States v. Holloway,
In
United States v. Ibarra-Sanchez,
we held that there was reasonable suspicion at the time of the initial vehicle stop based on “a veritable cornucopia of factors suggesting drug-related activity,” but probable cause for a warrantless search did not arise until the police officers actually smelled marijuana upon approaching the vehicle.
The Government argues that the agents had probable cause to arrest Zavala at the time of the search, so More-man was entitled to conduct a search of the cell phone incident to arrest without a warrant or consent.
See United States v. Finley,
The district court correctly determined that the agents did not have probable cause to arrest Zavala at the time that Moreman searched Zavala’s cell phone. The evidence obtained from Luna caused the DBA to put Rivera under surveillance; Zavala did not become a focus of the investigation until the agents fortuitously saw him participate in a suspicious transaction with Rivera and Pompa at the Tall Timbers residence. No agent recognized Za-vala from a previous investigation. Zavala had not been linked to Luna’s ledger through the 9418 number because those phone records did not identify the individual subscriber. No source informed the DEA that a drug transaction would occur at the Tall Timbers residence on July 16, 2004. No agent identified the objects being placed in the cardboard box. No agent saw Zavala participate in the loading or movement of the cardboard box. After the stop, Moreman recognized Pompa from a previous DEA operation, but that operation had not resulted in a seizure of drugs or the arrest of Pompa.
See Ybarra v. Illinois,
At the time Moreman searched Zavala’s cell phone, the agents had a reasonable suspicion of drug trafficking activity, but they did not have probable cause to arrest Zavala and charge him with a crime.
See Maryland v. Pringle,
C. Consent to Search
“A search may be conducted without either probable cause or a warrant if it is conducted pursuant to consent.”
United States v. Richard,
Because the initial stop of Za-vala was based on reasonable suspicion alone, the police were not permitted to search the car or Zavala absent consent. The district court found that Zavala consented to the search of his car and that his consent extended to the phones. We disagree. Given that Zavala’s phones were immediately removed from his person and placed on the roof of the vehicle, it was not objectively reasonable to understand his consent to search the car as consent to search the phones.
Neither was Moreman’s search of Zavala’s phone permissible under
Terry.
Without a warrant or consent,
Terry
permits only a limited pat-down search to determine whether the suspect is carrying a weapon.
4
Jenson,
D. License Check
During a traffic stop, a police officer may examine a driver’s license and vehicle registration, run a computer check on the driver and the vehicle, and question the driver about a wide range of matters, including those unrelated to the purpose of a routine traffic stop.
Brigham,
In the case of a traffic stop, a police officer must ensure that the driver does not have a warrant or a suspended license, and that the vehicle is registered and not reported stolen. These checks are routine and quickly performed. Additionally, state law requires a driver to carry a driver’s license and proof of insurance.
See Atwater v. City of Lago Vista,
Unlike a driver’s license and vehicle registration, which are typically issued by a governmental entity, cell phones contain a wealth of private information, including emails, text messages, call histories, address books, and subscriber numbers. Zavala had a reasonable expectation of privacy regarding this information.
See Finley,
Zavala’s vehicle was stopped because of a reasonable suspicion of drug trafficking activity. Just as the agents could not search Zavala’s vehicle for contraband based on this suspicion without consent or probable cause, they- could not search Za-vala’s cell phone for other incriminating evidence without consent or probable cause.
See Finley, All
F.3d at 259-60 (if the police officer has probable cause to arrest, then he may “look for evidence of the arrestee’s crime on his person in order to preserve it for use at trial”) (citing
United States v. Robinson,
E. Independent Source Exception
“The primary limit on the exclusionary rule is that otherwise suppressible evidence will still be admitted if the connection between the alleged illegality and the acquisition of evidence is so attenuated as to dissipate the taint.”
United States v. Grosenheider,
The Government argues that Moremaris testimony regarding the 6323 number is admissible under the independent source exception because Pompa testified at trial that Zavala’s cell phone number was the 6323 number. The independent source doctrine does not purge the taint associated with the constitutional violation in this case because no independent source testified that the cell phone Zavala was carrying at the time of his arrest was associated with the 6323 number.
For the independent source exception to apply, the evidence obtained through the independent source must be “identical to the evidence unlawfully acquired.”
6
Murray,
The core rationale underlying the exclusionary rule is the deterrence of police misconduct.
United States v. Lamas,
Pompa, an indicted co-conspirator, provided the only other testimony linking Za-vala to the 6323 number. Zavala’s core trial strategy revolved around (1) challeng *579 ing the credibility and motives of Luna and Pompa; and (2) suppressing Moreman’s testimony regarding the 6323 number. The admission of Moreman’s testimony both corroborated the testimony of Luna and Pompa and served as an independent basis for linking Zavala to the other co-conspirators. After considering the differences between the substance of the statements and the credibility of the witnesses, we find that giving the prosecution the benefit of the independent source exception would put it in a better position than it would have been in but for the police misconduct.
F. Inevitable Discovery Exception
The Government argues that probable cause to arrest developed after the cell phones were searched because Rivera’s confession implicated Zavala, so the 6323 number would have been discovered incident to arrest under the inevitable discovery doctrine.
See Finley,
The Government argues that Zavala’s one hour and thirty minute detention was permissible under
Terry
and did not develop into a de facto arrest without probable cause.
See Brigham,
The inevitable discovery doctrine asks whether there is a reasonable probability that the evidence in question would have been discovered in the absence of the police misconduct.
See Lamas,
Zavala’s detention, which exceeded one hour and thirty minutes, morphed from a
Terry
detention into a de facto arrest.
See Ibarra-Sanchez,
Absent the unconstitutional detention of Zavala before Rivera’s confession, Moreman’s testimony regarding the 6323 number is not admissible under the inevitable discovery exception because the search of Zavala’s cell phone is speculative.
9
See United States v. Cherry,
Because the Government raised its inevitable discovery argument in a footnote, it did not explain how the agents would have obtained the 6323 number from Zavala’s cell phone in the absence of police misconduct. If (1) Zavala’s cell phone was not searched at the time of the initial stop and (2) Zavala was not detained after the first search of the Taurus failed to uncover any drugs, it can hardly be said that the alternate means of obtaining the 6323 number from Zavala’s cell phone was in existence or imminent at that time.
10
See id.
at 1204
*581
(inevitable discovery test should be applied at the time of the police misconduct). The Government did not even propose a hypothetical scenario of how this information would have been obtained.
See United States v. Holmes,
Based on the record before us, it is impossible to speculate whether in the absence of police misconduct, the police would have dispatched a drug-detecting canine to the scene, or would have followed the Taurus until Rivera’s confession, or would have obtained a warrant and located Zavala while he possessed the cell phone. Because the Government has not carried its burden, it is not entitled to the benefit of the inevitable discovery exception.
G. Harmless Beyond a Reasonable Doubt
A constitutional error may be deemed harmless if the beneficiary of the constitutional error proves beyond a reasonable doubt that the error complained of did not contribute to the verdict.
See Neder v. United States,
Moreman’s testimony regarding the 6323 number linked Zavala to Rivera and Pompa. It also tainted the Government’s evidence regarding Zavala’s other subscriber number (the 9418 number) because Patricia Skidmore, an intelligence research specialist for the DEA, testified that the 6323 number and the 9418 number could have been carried by the same person. When combined with Moreman’s inadmissible testimony, Skidmore’s testimony regarding the 9418 number linked Zavala to Rivera and Luna. Skidmore used the phone records of the 6323 and 9418 numbers to create a chart showing commop phone calls between the co-conspirators, which allowed the Government to argue that they were all participating in a conspiracy to distribute cocaine. During closing argument, the prosecutor urged the jurors to review these phone records.
The jury specifically referenced Zavala’s cell phone numbers in Jury Note #2. During a bench conference, the prosecutor stated that the admission of Moreman’s *582 testimony was “critical to our case.” Moreman’s testimony linked Zavala to the 6323 number, Skidmore’s testimony linked Zavala to the 9418 number, and the anonymous phone records of these two numbers linked Zavala to Luna, Rivera, and Pompa. Although Skidmore reached her conclusions by relying on a comparison of the phone records of the 6323 and 9418 numbers, these admissible phone records did not identify the name of the individual subscriber. Moreman’s testimony essentially stamped these anonymous phone records with a name. Skidmore’s testimony is tainted by the constitutional violation because the jury might have linked Zavala to the 6323 phone records based on More-man’s testimony, and then linked Zavala to the 9418 phone records based on Skid-more’s testimony.
The jury might have linked Zavala to his co-conspirators based solely on Moreman’s inadmissible testimony, without relying on the testimony of Luna and Pompa. Alternatively, the jury might have given more credence to the testimony of Luna and Pompa because it was corroborated by the testimony of Moreman. The error was not harmless beyond a reasonable doubt because the jury might have convicted Zava-la based, in whole or part, on the inadmissible testimony of Moreman.
III. Conclusion
The exclusionary rule prohibits the introduction of testimony concerning knowledge acquired during an unlawful search.
See Murray,
REVERSED AND REMANDED.
Notes
. The subpoenaed phone records for the 6323 and 9418 numbers did not identify the name of the subscriber because they were associated with pre-paid service plans. The only identifying information in these two sets of phone records were two different birth dates, neither of which corresponded to Zavala's actual birth date.
. Moreman never confirmed Zavala's subscriber numbers in this manner.
. Unlike static surveillance, where the agents constantly observe the target from a stationary position, fluid surveillance requires the agents to periodically drive by their target in different vehicles in order to avoid detection.
. Under
Terry,
the police officer could order Zavala to empty his pockets and place the contents on the roof of the Taurus to confirm that he was not carrying a weapon.
See Unit
ed
States
v.
Reyes,
. The 6323 number was not plainly visible to Moreman. He had to open the cell phone and manipulate it in order to retrieve the subscriber number. Thus, Moreman’s testimony regarding the 6323 number is not admissible under a plain view theory.
See United States v. Hill,
. Because we typically apply the independent source exception in cases involving physical evidence, as opposed to testimonial evidence, the "identical” requirement is usually not an issue.
See, e.g., Moore,
. The inevitable discovery test in this circuit is more favorable to the Government than the test in other circuits. See
United States v. Heath,
. In its oral ruling at the suppression hearing, the district court made the factual finding that Zavala was detained for one hour and thirty minutes before Rivera confessed. This factual finding is not clearly erroneous. We express no opinion on whether a Terry detention could exceed one hour and thirty minutes based on a different set of facts.
. We reject Zavala's argument that the phone records pertaining to the 6323 number should be suppressed. These records are admissible under the inevitable discovery exception because there is a reasonable probability that Skidmore would have subpoenaed them based on the untainted information provided by Pompa. In the district court, Zavala waived this issue by stating that "the [Government] can get to the phone records through the ledgers [of Luna] or [the testimony] of Pompa-Hernandez.”
.This case falls outside the mine run of cases in this circuit applying the inevitable discovery exception. For example, absent these two constitutional violations, Zavala would not have remained in the custody or control of the police until his phone was legally searched.
See, e.g., United States v. Seals,
