OPINION
Javier Valencia-Amezcua appeals his conviction for manufacturing more than 500 grams of methamphetamine, in violation of 21 U.S.C. § 841(a)(1) and 841(b)(l)(A)(viii). He challenges the denial of his pre-trial motions to suppress evidence and the admission of expert testimony at trial. He also claims that sufficient evidence did not exist to support his conviction and that his sentence should be reversed in light of
Apprendi v. New Jersey,
I
On January 24, 2000, two officers with the Tillamook, Oregon narcotics team, Sheriff Deputy Mark Groshong and Detective Neil Martin, observed suspected drug offender Juan Valencia-Rodriguez (‘Valencia-Rodriguez”) drive to a car wash and hand an envelope to a man who was under investigation for narcotics violations. Later that day, other Tillamook police officers conducted a traffic stop of this other man, and a search revealed that the envelope transferred by Valencia-Rodriguez contained methamphetamine. Meanwhile, Officers Groshong and Martin had stopped Valencia-Rodriguez after he left the car wash, and had questioned him. When asked what he was doing at the car wash, he said that he went there to vacuum his car. Still later that day, and understandably in light of the contraband found in the envelope given by Valencia-Rodriguez to the other man, Officer Groshong went to Valencia-Rodriguez’s house where Valencia-Rodriguez told Officer Groshong that other adults were present and gave Grosh-ong verbal permission to enter the house. Valencia-Rodriguez then led Groshong to an upstairs bedroom. There, the appellant, Javier Valencia-Amezcua (“Amezcua”) 1 was found sitting on a bed with two other men. A television set in this room was turned off. Groshong asked the three men to go to the front porch. *905 On the porch, Groshong, Valencia-Rodrí-guez and his wife, Rosa, and the three men from the upstairs bedroom waited for other narcotics officers to arrive. After these other officers arrived, they obtained a written consent to search the house from both Javier and Rosa Valencia-Rodríguez. The officers then proceeded to conduct a search.
In a first floor bathroom, the officers found a man sitting in the dark, on the edge of the bathtub. A search of this bathroom revealed several bags of methamphetamine and a set of electronic scales. In a bedroom on the first floor, the officers found electric fryers, large plastic garbage cans and several cans of denatured alcohol, a substance used to make methamphetamine. In the upstairs bedroom where Amezcua and the other two men were found, the officers found a hidden door covered in wall paneling. The door was visible because it was partly open. This disguised door was blocked by the bed on which Amezcua and the two other men were sitting when first discovered by the officers. The officers moved the bed away from the wall and opened the hidden door. Lo and behold, they discovered a secret room complete with a five foot tall metal gas cylinder, several plastic tubs, and a large plastic storage container full of a suspicious white ground powder. Bolstered by the incriminating fruits of their initial search, the officers arrested Amezcua, the Valencia-Rodriguezes and the other men in the house on drug charges. The next day, state police officers conducted a more thorough search of the residence and surrounding premises with agents from the Drug Enforcement Agency (“DEA”).
After he was arrested, Amezcua was taken to the local jail. There, his clothing was removed for inventory and chemical analysis. Cashier receipts for rubber gloves, multiple gallons of denatured alcohol, paper towels and ziploc bags were found inside his coat pocket and inventoried. Household goods of the quantity and type indicated on these receipts are commonly used to support methamphetamine lab operations. These receipts came from stores located near the residence listed on Amezcua’s Mexican consulate and Oregon state identification cards, which had been found in his wallet. The receipts indicated that the items had been purchased two days before the search of the Valencia-Rodríguez house.
On February 10, 2000, Amezcua was charged with manufacturing methamphetamine (Count 1) and possession of methamphetamine with intent to distribute (Count 2), both counts in violation of 21 U.S.C. § 841(a)(1). Amezcua filed a motion to suppress the results of the chemical test of his clothes as evidence seized as a result of an illegal arrest. The district court granted the motion, finding that the officers lacked probable cause to arrest Amezcua on January 24. Amezcua later filed motions to suppress the ID cards and the coat pocket receipts. The district court denied these motions, holding that this evidence would have been inevitably discovered by agents from the Immigration and Naturalization Service (“INS”). The district court held that, if the officers had not arrested Amezcua on drug charges, they inevitably would have called INS agents to investigate Amezcua’s immigration status. The district court concluded that the INS agents would have detained Amezcua on immigration violations, conducted a search of his wallet and coat pockets in the routine course of investigation, and found the challenged ID cards and receipts.
At trial the government called Juan and Rosa Valencia-Rodríguez to testify. Both alleged that Amezcua had taken part in *906 methamphetamine production at their house on January 24 and that he had been to their house on prior occasions. The government also proffered the expert testimony of a DEA agent who testified on the structure and operations of large-scale, clandestine methamphetamine labs. Throughout the trial, Amezcua claimed that he had been taken by a friend to the Valencia-Rodriguez house for the first time on January 24 and that he was not involved in drug production activity at the house. The jury returned a verdict convicting Amezcua of Count 1, manufacturing methamphetamine, and acquitting him of Count 2, possession with intent to distribute methamphetamine. Amezcua was sentenced to 151 months of imprisonment followed by a five-year period of supervised release.
Amezcua appeals, challenging, inter alia, the admission at trial of the coat pocket receipts and his ID cards as fruit of the poisonous tree following an illegal arrest. He asks us to hold that the district court erred in applying the inevitable discovery doctrine. Because we conclude that Amezcua’s arrest was not illegal, we affirm the admissibility of the receipts and ID cards on a ground different than that relied upon by the district court. 2
II
A. Probable Cause for Arrest
The dispositive issue for us is whether the narcotics officers made a legal arrest of Amezcua, after finding him in the upstairs bedroom of Valencia-Rodriguez’s house. Whether the police had probable cause to arrest Amezcua is a mixed question of law and fact, which we review de novo.
United States v. Buckner,
There is no doubt that police may arrest a person with out a warrant if the arrest is supported by probable cause.
See United States v. Hillison,
It is also well established that the judgments made by law enforcement officers in the heat of their battle against crime need not be assessed in the abstract; weight may be given to the experienced judgment of the officers. As we have previously made clear: “In drug investigations, the court may consider the experience and expertise of the officers involved. This experience and expertise may lead a trained narcotics officer to perceive meaning from conduct which would otherwise seem innocent to the untrained observer.”
Buckner,
These legal principles are dispositive in assessing the legality of Amezcua’s arrest. Here, the narcotics officers were presented with incriminating evidence encouraging them to arrest Amezcua. The officers had the consent of Valencia-Rodriguez to search his house. Valencia-Rodriguez was a suspected drug trafficker recently observed in a suspicious transaction. During the consented-to search, Amezcua *907 was found in a bedroom with a hidden door covered in wall paneling. Amezcua was sitting with others just in front of the door on a bed that may have been placed there to obscure the door. Behind the hidden door lay a secret room, which contained tools, equipment and supplies illicitly used to make methamphetamine.
The district court found these facts insufficient to create probable cause for the arrest of Amezcua because (1) the methamphetamine lab equipment was hidden from view; (2) no methamphetamine odor emanated prior to the commencement of the search; and (3) none of the men on the bed appeared to exercise control over the house. The district court concluded that Amezcua’s mere presence in the bedroom could not support a finding of probable cause. We disagree and hold that the evidence linking Amezcua to drug production activity was sufficient to create probable cause supporting his arrest.
It is well settled that mere presence with known drug offenders is insufficient to give probable cause for an arrest.
See Sibron v. New York,
In holding that Amezcua was merely present in the Rodriguez house, the district court incorrectly relied on our decision in
United States v. Robertson,
Robertson
is distinguishable and has no persuasive force here. The evidence linking Amezcua to the production of methamphetamine went beyond Amezcua’s mere presence in the Valencia-Rodriguez house and his “propinquity to others independently suspected of criminal activity[.]”
Ybarra,
Under the totality of the circumstances, a reasonable and prudent narcotics officer could believe that there was a fair probability that Amezcua was involved in criminal activity at the Valencia-Rodriguez house.
See Bettis v. United States,
B. Expert Testimony of DEA Agent
Special Agent Debbie Podkoa, a veteran of the DEA with sixteen years of experience, investigated the Rodriguez house on the day after Amezcua was arrested. At trial she testified that (1) the house contained a large-scale methamphetamine lab requiring the participation of numerous workers and that (2) as a typical method of operation, large-scale manufacturers of methamphetamine do not allow uninvolved persons near their operations because of fear of theft. On appeal, Amezcua argued that this testimony was irrelevant and unfairly prejudicial. Because no objection was made to the DEA agent’s testimony at trial, we may not give relief on this ground unless plain error is shown.
United States v. Vences,
As a general rule, evidence is relevant if it has “any tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence.” Fed. R.Evid. 401. As a more specific rule, pertinent here, it is commonplace that expert testimony regarding the structure of criminal enterprises is admissible to help the jury assess a defendant’s involvement in that enterprise.
See United States v. Patterson,
Even when expert testimony is otherwise relevant and admissible, this “evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice ...” Fed. R.Evid. 403. Amezcua makes no particularized argument on prejudice but merely combines his argument that the expert testimony was irrelevant with an assertion of prejudice. He is incorrect on both relevance and undue prejudice.
Here, the jury was presented with specific and detailed evidence on the structure and scope of the methamphetamine lab operations at the Valencia-Rodríguez house. They were tasked with a duty to decide whether Amezcua was involved or was merely an unknowing visitor. Agent Podkoa’s general testimony on the aversion of large-scale methamphetamine producers to allow unaffiliated individuals near clandestine operations was relevant to help the jury form a true and correct picture of the facts.
The admissibility of this expert testimony is persuasively supported by our several prior decisions endorsing the admission of modus operandi testimony and in particular those suggesting that drug traffickers generally do not entrust large quantities of drugs to unknowing transporters.
United States v. Murillo,
Amezcua erroneously argues that our decision in
United States v. Vallejo,
*910 Agent Podkoa’s testimony was directly relevant to rebut Amezeua’s assertion that, although he was discovered adjacent to a secret methamphetamine lab at the Valencia-Rodríguez house, he had nothing to do with the drug production activities that occurred there. Agent Podkoa’s expert testimony was admissible, for such weight as the jury might give it, and the district court did not commit plain error by failing to exclude it.
C. Sufficiency of the Evidence
Amezcua challenges his conviction on the ground that there was insufficient evidence to support the jury’s verdict. We review the sufficiency of the evidence to support the conviction de novo.
See United States v. Pacheco-Medina,
At trial the jury was presented with substantial evidence of large-scale methamphetamine production at the Valencia-Rodríguez house. The jury heard the testimony of DEA Agent Podkoa indirectly linking Amezcua to the methamphetamine operations. The jury heard the directly incriminating testimony of Juan and Rosa Valencia-Rodríguez who testified that Amezcua was at their house before and helped to make methamphetamine. The jury was also presented with powerful circumstantial evidence, the receipts for the purchase of household tools used in methamphetamine production, found in Amezeua’s possession at the time of the arrest and showing purchases from stores near Amezeua’s home. We hold that rational jurors could have found Amezcua guilty of manufacturing methamphetamine beyond a reasonable doubt.
D. Drug Quantity Findings
Amezcua contends that the Supreme Court’s decision in
Apprendi v. New Jersey,
In
Apprendi,
the Supreme Court held that “[o]ther than the fact of a prior conviction, any fact that increases the penalty for a crime beyond the prescribed statutory maximum must be submitted to a jury, and proved beyond a reasonable doubt.”
Id.
at 490,
Count 1 of the indictment charged Amezeua with the manufacture of more than 500 grams of methamphetamine, and the trial judge explicitly instructed the jury that a conviction on this charge required a finding of at least that quantity. When the jury found Amezeua guilty of Count 1, it necessarily found beyond a reasonable doubt that Amezeua was guilty of manufacturing more than 500 grams of methamphetamine. As required by Ap-prendi, the drug quantity was properly submitted to the jury and proved beyond a reasonable doubt.
AFFIRMED.
Notes
. It does not appear that Juan Valencia-Rodriguez (the occupant of the house) and Javier Valencia-Amezcua (the defendant-appellant) share a familial relationship.
. We may affirm the district court's decision to admit the coat pocket receipts and ID card on any ground supported by the record.
See United States v. Gonzalez-Rincon,
. Because we hold that probable cause existed to arrest Amezcua, we need not reach the issue of whether the district court erred in denying Amezcua's motion to suppress this evidence, as evidence seized as a result of an illegal arrest, based on the inevitable discovery doctrine. Given our view of the arrest, we have no occasion to assess inevitable discovery.
.
See also United States v. Gil,
. In
Vallejo,
the defendant was arrested at the Mexican border, his car found filled with marijuana. He was convicted of importation and possession of marijuana with the intent to distribute.
