Acting on Amando Monteiro’s pretrial motion, the district court suppressed from evidence two guns the police obtained during a vehicle stop. The government sought our review pursuant to 18 U.S.C. *41 § 1371, which authorizes interlocutory appeals in situations such as this. We affirm.
I.
In an appeal from a suppression order, the district court’s findings of fact govern absent a showing of clear error.
Ornelas v. United States,
Shortly after 4:00 P.M. on March 25, 1999, Boston police responded to reports of gunfire on Eastman Street, in the Dor-chester section of the city. The target of the shooting, who escaped unharmed, was Antonio Cabral. The police knew that Cabral was associated with a gang and that his gang and its rival had been involved in a series of shootings. At the scene on Eastman Street, patrol officers James Coyne and Thomas Griffiths spoke with Cabral for about an hour. Cabral reported that two men had shot at him through a fence, while he was standing in his driveway. Cabral said he had no knowledge of the identity of the shooters, but another person who had been nearby told the police that a red Mazda had raced away from Eastman Street shortly after the shooting.
At around 8:00 P.M. that evening, Coyne and Griffiths returned to Eastman Street and interviewed Cabral again. This time, Cabral’s mother and brother were present. Cabral again said he had no information for the police. The Cabrals complained that the police “weren’t doing enough in the community to stop the violence.” Coyne responded that the police could do more if neighborhood residents would “give us information for us to solve these shootings.” Cabral then said that he had no information to offer about his own shooting but that he had information about another shooting that same day. Cabral said that a relative told him that she had witnessed gunfire on Shirley Streеt from two cars, a red Mazda and a red Honda with license plate 5021EV. Coyne asked Cabral who the relative was. Coyne understood Cabral to indicate that the relative was female, but Cabral refused to give her name or any other information about her. The police made no further attempts to identify or locate the unnamed relative.
That same evening, Coyne and Griffiths drove to Shirley Street and looked for some evidence of gunfire, such as spent shell casings or bullet damage. They found none. The officers also searched the police department’s records to see if anybody had reported gunfire on Shirley Streеt. No one had. Coyne later testified at the suppression hearing that it was typical for shootings in the neighborhood to be reported to 911, and for obvious evidence of gunfire to be found at the scene. 1
Coyne ran the 5021EV license plate number through the vehicle registration database and matched the plates to a red Honda belonging to Marcelino Rodrigues. Coyne was familiar with Rodrigues and suspected that he was affiliated with a gang that was a rival to Cabral’s. Coyne also knew that Rodrigues had been arrested three weeks earlier in Randolph, Massachusetts, on a firearms possession *42 charge. 2 Coyne and Griffiths went to the address Rodrigues hаd listed on his vehicle registration, but Rodrigues was not there. That night, the officers looked for Rodri-gues around the neighborhood but did not find him. Coyne and Griffiths radioed other officers in the area to be on the lookout for Rodrigues and the red Honda, but no one saw Rodrigues or his car.
A full week passed during which the police apparently conducted no further investigation of the possible shooting on Shirley Street. Then, on March 31st, Coyne, Griffiths, and a third officer were conducting a traffic stop when they saw Rodrigues and two passengers drive by. The officers rushed to their cars, pursued Rodrigues, and pulled him over for “field interrogation and observation.” 3 There was no traffic violation or suspicious activity. The defendant was one of Rodrigues’s passengers.
Although this appeal is limited' to the legality of the initial vehicle stop, we relate briefly what happened thereafter. The officers ordered Rodrigues and his passengers to step out of the car. The third officer, who was not available to testify at the suppression hearing, told Coyne that he had seen a gun in the center console of the car. 4 The police then handcuffed Rod-rigues and his passengers and, upon obtaining a search warrant, searched the car and recovered two guns. These guns comprise the evidence аt issue in this appeal. At the scene, the police questioned Rodri-gues about the purported Shirley Street shooting and about the attempted shooting of Cabral on Eastman Street. Rodrigues denied involvement in either event. 5
Subsequently, the state and federal governments indicted the defendant on a variety of charges. In both prosecutions, the defendant sought to suppress evidence gathered in connection with the March 31st stop of Rodrigues’s car. 6 The district court held a two-day evidentiary hearing and issued a thoughtful order. The court concluded: “While this is a borderline case, once the tip [of a shooting on Shirley Street] proved to be unreliable, the hunch [that Rodrigues was involved in criminal activity] was not enough to establish a reasonable and articulable suspicion of criminal activity sufficient to stop the red Honda.”
II.
The sole question in this interlocutory appeal is whether the police acted reasonably in stopping Rodrigues and his passengers on March 31st. Because only the district court’s ultimate Fourth Amendment conclusion is at issue, our review is
de novo. United States v. Paradis,
*43
When a police officer makes “brief investigatory stops of persons and vehicles that fall short of traditional arrest ... the Fourth Amendment is satisfied if the officer’s action is supported by reasonable suspicion that criminal activity may be afoot,”
United States v. Arvizu,
While the defendant was neither the driver of the vehicle stopped on March 31st nor then the subject of police suspicion, he was seized when the police stopped Rodrigues’s car. Consequently, he has the right to contest the legality of that stop.
See United States v. Woodrum,
III.
The government contends that the totality of the circumstances known to the police provided adequate justification for the March 31st vehicle stop. In its briefs, the government suggests that the police may have suspected Rodrigues of three types of wrongdoing: the purported shooting on Shirley Street; the attempted shooting of Cabral on Eastman Street; and ongoing involvement in what the government terms “gang warfare.” However, the government conceded at oral argument that there is “no” information in the record tying Rodrigues or his car to “involvement in the Eastman Street shooting.” (Coyne had said essentially the same while testifying at the suppression hearing.) Furthermore, while the police suspected Rodrigues of being a gang member, the government does not contend that there was any reason to suspect that Rodrigues and his passengers were involved in criminal activity when the stop took place on March 31st, or that they were about to be so involved.
The government does argue that the police had a reasonable suspicion, grounded in specific and articulable facts, that Rodrigues had committed a crime on Shirley Street on March 25th. (Coyne testified that investigation of this purported crime was his actual motivation in stopping the Honda on March 31st.) 7
The tip from Cabral’s unidentified relative is the focus of the government’s argu *44 ment. Therefore, in section A, we evaluate the appropriate place in the reasonable suspicion analysis i) of that tip and ii) of the factors that the government argues corroborated it. We conclude that the minimally corroborated tip did not alone provide reasonable suspicion for a vehicle stop on March 31st. In section B, we consider the tip and its minimal corroboration with the other information known to the police on March 31st. We conclude that the totality of the circumstances, including the tip, did not provide reasonable suspicion to stop the car on March 31st.
A. The Tip From Cabral’s Relative
The only indication that a shooting actually had occurred on Shirley Street was the hearsay statement of Cabrаl’s unnamed relative, as relayed to the police by Cabral. Three Supreme Court cases provide the basic parameters for determining whether an informant’s tip provides reasonable suspicion for a
Terry
stop. The first of these cases is
Adams v. Williams,
Anonymous tips are a different matter. The second relevant Supreme Court case,
Alabama v. White,
The third and most recent Supreme Court case dealing with tips in the context of
Terry
stops is
Florida v. J.L.,
The defendant argues that the tip here was anonymоus and uncorroborated (like the tip in J.L.). The government avers that the tip was neither truly anonymous (and so somewhat comparable to the tip in Adams) and that the tip was corroborated (like the tip in White). Our analysis takes two parts. We explain i) that the tip in this case, whether or not it can rightly bear the technical moniker “anonymous,” 8 was akin to the anonymous tips analyzed by the Supreme Court in J.L. and White in that it could not provide reasonable suspicion unless corroborated; and ii) that because, as in J.L. and unlike in White, it was not sufficiently corroborated, the tip could not, by itself, provide reasonable suspicion for the vehicle stop.
i. The Tip Itself
The government contends that the hearsay tip in this case was more reliable than the anonymous tip analyzed in J.L. because of the police officers’ interactions with Cabral, and because Cabral was able to report a crime supposedly witnessed by his unnamed relative.
Certain of the government’s arguments have superficial appeal. More so than in
J.L.,
the police here had some limited means of narrowing the class of people who might have provided the tip.
See J.L.
at 270,
Contrary to the government’s suggestion, however, the tip in this case bears some important badges of unreliability not present in the cases relied upon by the government. First, there is the hearsay problem. While the police or a 911 operator often can make some rough judgments about the age, cognitive ability, and motivations of an anonymous informant based on her tone of voice (if the tip occurs via the telephone), or appearance and demean- оr (if the tip is delivered in person even by a complete stranger), the police here had
*46
no way of knowing the state of mind of Cabral’s relative when she gave her information, or whether she was a person who could be relied on to relate events accurately. In cases where uncorroborated hearsay tips have been deemed reliable in contributing to reasonable suspicion, there has been a stronger indication that the informant can be trusted. In
Tucker,
Second, there was a higher risk of fabrication here. The
J.L.
Court deemed anonymous tips inherently unreliable largely bеcause such tips carry with them a risk of fabrication by the informant.
See J.L.,
Finally, crucially, and unlike in
J.L.,
the police had specific reasons to doubt the tip by the time they made their stop. In
J.L.,
“there [were] no factors that cast doubt on the reliability of the tip.”
ii. Corroboration
The fact that the license plate number mentioned in the tip led to - Rodrigues provides a solid means of identification, but it does not corroborate the tip’s assertion that there had been a shooting on Shirley Street. When police officers stop a person in reliance on a tip, “reasonable suspicion ... requires that a tip be reliable in its assertion of illegality, not just in its tendency to identify a determinate person.”
J.L.,
The government also argues that Rodrigues’s recent arrest and reputation as a gang member provided corroboration for the tip. While “knowledge of a person’s prior criminal involvement (to say nothing of a mere arrest) is alone insufficient to give rise to the requisite reasonable suspicion,”
United States v. Sandoval,
But, here, the officers’ awareness of Rodrigues’s involvement in gang activity and his prior arrest is not linked to any reliable information about criminal activity on Shirley Street. In the cases the government relies upon, courts have found that an individual’s criminal history corroborated reliable information, such as a police officer’s own observations, in constituting reasonable suspicion. In
United States v. Christmas,
Where “a tip has a relatively low degree of reliability, more information will be required to establish the requisite quantum of suspicion than would be required if the tip were more reliable.”
White,
B. The Totality of the Circumstances on March 31st
The government argues that even if it was insufficient by itself, the hearsay tip, evaluated in light of Rodrigues’s arrest and reputation as a gang member, when combined with other circumstances — the Eastman Street shooting and the “ongoing gang warfare” — justified the vehicle stop. We disagree.
First, what happened (and did not happen) in the week between the hearsay tip and the stop reduced the weight that the tip could carry in the reasonable suspicion analysis. In
Hensley,
which also involved an investigatory stop conducted several days after a crime, the Supreme Court indicated that the reasonable suspicion analysis should take into account the passage of time between a reported crime and a
Terry
stop. The
Hensley
Court explained that the “factors in the balanсe” of determining whether a
Terry
stop is permissible, “may be somewhat different when a stop to investigate past criminal activity is involved rather than a stop to investigate ongoing criminal conduct.”
Hensley,
This is because the governmental interests and the nature of the intrusions involved in the two situations may differ.... A stop to investigate an already *49 completed crime does not necessarily promote the interest of crime prevention as directly as a stop to investigate suspected ongoing criminal activity.... [Additionally,] officers making a stop to investigate past crimes may have a wider range of opportunity to choose the time and circumstances of the stop.
Id. See also United States v. Hudson,
As we indicated above, by the time the stop occurred, a full week after the hearsay tip, the police had investigated the tip and found no corroboration, excluding Rodrigues’s reputation and his arrest three weeks earlier, that a Shirley Street shooting had occurred. Questionable
Terry
stops may become even less reasonable if “the police have had the time to develop” better grounds for the stop but have failed to do so.
United States v. Hudson,
Similarly, while there may be a rationale for according special weight to anonymous tips in cases of an imminent threat to public safety, there was no imminent threat in this case.
See J.L.,
Furthermore, contrary to the government’s assertion, we are not persuaded that there were any other substantial “governmental interests,”
Hensley,
This also might have been a different case if the police had demonstrated that they had no better way to question Rodri-gues a week after the purported crime on Shirley Street. We can envision circumstances where a Terry stop to investigate a completed crime may be justified in part because the police have searched for a suspect in all his usual haunts but failed to find him. In those circumstances, a suspect’s unusual absence may be probative of an effort to elude the police and an articu-lable indication of specific past criminal activity. But there is no evidence that this was such a case.
In the end, the police had little more reason to suspect Rodrigues of specific criminal activity on March 31st than they did before receiving the hearsay tip. The police suspected Rodrigues of being affiliated with a gang and knew of his recent arrest. And the police knew that there had been gang violence in the neighborhood. But the government does not suggest that the police had information tying Rodrigues, personally, to any of this violence. The only possible crime to which the police could tie Rodrigues — the Shirley Street shooting — was one that appeared, in all likelihood, never to have occurred. After considering all of the circumstances relevant to the March 31st stop, we conclude that the district court correctly suppressed the evidence derived therefrom.
Affirmed.
Notes
. Specifically, Coyne testified that after shootings in the neighborhood:
There would be parties outside. There would be numerous 911 calls.... You’d get to the scene. There would be cars, multiple cars shot up, ballistics damage in the street.
. The charges against Rodrigues from the Randolph arrest eventually were dismissed.
. We quote this phrase, which appears to be a tеrm of art in the Boston Police Department, from Officer Coyne's testimony at the suppression hearing. Coyne explained that he meant that he had stopped Rodrigues’s car to "get information” by "speaking to [the driver].”
. At least one of the police officers had seen Rodrigues leaning towards the center of his car as the police pulled him over, after the stop was initiated (the government does not rely on this evidence in arguing for the legality of the initial stop).
. Later, after agreeing to cooperate with the government, Rodrigues testified at the suppression hearing that he had indeed been involved in the attempted shooting of Cabral. Rodrigues also testified that there had been no shooting on Shirley Street on March 25th.
. The state court also granted the defendant’s motion to suppress.
. Of course, reasonable suspicion is an "objective legal standard,"
Ornelas,
. There are differing views on whether the police must normally treat as anonymous a hearsay tip, received from a known individual, that an unnamed third party has witnessed a crime.
Compare United States v. Fernandez-Castillo,
. Still, while the government analogizes to cases in which a person tells the police about things he has seen himself, this is simply not a case where the police received a "personal observation” or "first-hand account” of a crime. Cabral, from whom the police received the tip, had not observed anything on Shirley Street.
See United Stales v. Cochrane,
. The government emphasizes Coyne's ability to observe Cabral’s demeanor as he related the tip from his relative, and hence to evaluate the possibility that Cabral was fabricating that tip. These observations, however, did not address the possibility that the unnamed relative had fabricated the tip. The tip from Cabral’s relative simply cannot be deemed more reliable by virtue of Cabral’s face-to-face interaction with the police.
Compare J.L.,
. The government also cites
United States v. Mitchell,
. The situation here also is far different from one in which an anonymous tipster accurately forecasts another individual’s "not easily predicted movements” in a manner that confirms the tipster's knowledge of the subject's criminal intentions.
J.L.,
