Freddie Henderson Lundy entered a conditional guilty plea to the charge of possession with intent to distribute more than 1,000 kilograms of marijuana. Lundy argues the district court should have granted his motion to suppress the marijuana found during a search of his vehicle at an immigration check point. Lundy contends that the duration of the stop was unreasonable because it continued after agents verified that he was a United States citizen.

The border patrol agent who interviewed Lundy testified that Lundy’s nervousness, confused story, description of his lengthy and indirect route, and body posture that blocked a view into the truck cab caused him to believe that Lundy might be transporting illegal aliens and that Lundy consented to a search of the vehicle. We find no indication that the district court’s decision crediting the testimony of the border patrol agent was clear error. 1 The *325 totality of the circumstances shows that the agents had reasonable suspicion to detain Lundy while they determined whether he had passengers in his vehicle. 2 During the lawful stop, a canine alerted to the exterior of Lundy’s trailer. Lundy does not dispute that the canine alert provided reasonable suspicion for the subsequent search of the trailer. The judgment of the district court is AFFIRMED.