Joseph Dominic Marcel Maltais appeals the district court’s
1
denial of his motion to suppress evidence seized during a search of his truck and trailer.
See United States v. Maltais,
I.
Senior Border Patrol Agent Robert Danley, performing border patrol duties in a marked border patrol vehicle, encountered Maltais approximately 500 yards south of the Canadian border in rural North Dakota at approximately 1:00 a.m. on August 8, 2003. Maltais was sitting in the driver’s seat of his truck, which was parked facing south by the side of a gravel road. The truck was towing a camper trailer, and both vehicles displayed Manitoba license plates. Prior to this encounter, Danley knew that a local farmer had reported seeing a truck and trailer of similar description driving in the area in the early morning hours.
Agent Danley stopped and requested license checks on the truck and trailer. Shortly thereafter, Maltais approached Danley’s vehicle and asked whether there was a problem. The parties agree that Danley inquired about Maltais’s immigration status and his most recent entry to the United States, but there is a dispute about precisely what was said.
During this time, Senior Patrol Agent Bernard Olson heard the radio traffic and recognized the license plate numbers called in by Danley. Olson contacted Dan-ley by radio and informed him that Mal-tais’s vehicle was suspected of involvement in contraband smuggling. When Maltais’s vehicle and trailer had undergone inspection at the Dunseith, North Dakota, Port of Entry around June 10, 2003, inspectors discovered hidden compartments in the floorboards of the trailer. Olson knew of the discovery and knew that Maltais’s vehicle and trailer matched the description of *553 the suspected smuggling vehicle. Olson asked Danley to detain Maltais until he could get there to pursue the investigation further. Danley then approached Maltais and instructed him to step out of the truck. Danley frisked Maltais and placed him in the back of the Border Patrol vehicle.
Olson contacted Special Agent Chris Guyer in Minot to let him know that Dan-ley had stopped Maltais with the truck and trailer. As a result of previous intelligence reports and investigations, Guyer suspected that Maltais was a member of an international drug-smuggling group called the “Tetz Organization,” which the Royal Canadian Mounted Police and the Canada Customs and Revenue Agency believed to be smuggling marijuana and currency into North Dakota from Manitoba. Guyer also knew that Maltais had been stopped at the Dunseith port of entry on June 10 with the same vehicles observed by Danley.
Olson was approximately 100 miles from the scene when he first spoke to Danley. At approximately 1:30 a.m., Olson contacted Bureau of Indian Affairs Officer Stacy LaRoeque seeking canine assistance at Danley’s location. LaRoeque went to the police station, spoke with the K-9 handler, Officer Robert Hulett, and arranged to bring Hulett and a dog to the scene. LaR-oeque and Hulett obtained approval from the lead officer to provide such assistance at approximately 2:00 a.m. They drove to the scene from Belcourt, North Dakota, which was over sixty miles from Danley’s location.
Between 2:40 and 3:10 a.m., Guyer, Olson, LaRoeque, and Hulett arrived at the scene. Olson identified Maltais as the same individual he had encountered during the inspection of the truck trailer at the Dunseith Port of Entry. At approximately 3:15 a.m., Olson asked Maltais for consent to search the truck and trailer. Maltais declined. 3
Around 3:30 a.m. to 3:35 a.m., Hulett’s drug-detecting dog swept the truck and trailer. The dog alerted to contraband at the rear of the trailer and twice near the trailer’s side door. At this point, officers conducted a quick protective search of the trailer and saw several open black duffel bags containing plastic vacuum-sealed bags filled with a green leafy substance that appeared to be marijuana. Danley read Maltais his Miranda rights at approximately 3:55 a.m. Shortly thereafter, Mal-tais and the vehicles were taken to the Bottineau Border Patrol Station.
Later that day, Border Patrol agents executed a federal search warrant on the truck and the trailer. The search revealed three hidden compartments in the floorboards, which contained vacuum-sealed bags filled with marijuana. In total, 225.7 pounds of marijuana were seized.
Maltais was charged with one count of possession with intent to distribute a controlled substance. The district court denied his motion to suppress, concluding
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that the agents had reasonable suspicion to detain Maltais pending further investigation, and that the.scope and duration of the detention did not violate the Fourth Amendment. The court remarked that “[i]t would have been extremely poor police work and incompetence to have done nothing and to have failed to take any steps to detain Maltais to further investigate the matter.”
II.
Maltais first argues that he and his vehicles were seized in violation of the Fourth Amendment because the officers did not have sufficient grounds to justify his detention before they located the marijuana. It is well established, of course, that a law enforcement officer may detain a person for investigation without probable cause to arrest if the officer “has a reasonable suspicion supported by articulable facts that criminal activity ‘may be afoot.’ ”
United States v. Sokolow,
Maltais correctly observes that general assertions of suspicion are not sufficient to justify detention. For example, “[a] report that a particular car is ‘suspicious’ simply does not indicate whether its occupants may be engaged in criminal activity.”
Thompson v. Renting,
We disagree with Maltais that a reasonable suspicion may not be based in whole or in part on hearsay information. The Supreme Court long ago rejected the contention that reasonable cause for a temporary detention “can only be based on the officer’s personal observations, rather than on information supplied by another person.”
Adams v. Williams,
After reviewing Danley’s encounter with Maltais, including the information that Danley received from fellow officers, the district court concluded that:
Agent Danley had far more than just a citizen’s report of a “suspicious vehicle.” Even before Maltais approached Agent Danley during the early morning hours on August 8, 2003, in remote northern North Dakota, Agent Danley specifically knew that (1) a truck and trailer matching the vehicles at the side of the road had gone through an inspection at the Dunseith, North Dakota, Port of Entry on June 10, 2003; (2) the Bureau of Customs and Border Protection Inspectors found several hidden compartments in Maltais’ trailer commonly associated *555 with drug trafficking operations; (3) a truck and trailer matching this description were reported by a local farmer to be driving in this area in the early morning hours; (4) Agent Danley had been provided with background information concerning Maltais and the suspected drug ring originating in Canada or on the west coast; (5) roads in this area cross the United States and Canadian border where there are no designated ports of entry and these roads can be easily driven by almost any vehicle; (6) the truck and trailer had Canadian license plates; and (7) the location was within 500 yards of the United States and Canadian border.
We think
United States v. Beck,
Maltais, by contrast, was not involved in a routine traffic stop. His vehicle was parked in a remote location close to the Canadian border in the dead of night. Even assuming that such behavior is innocent, the agents had concrete reasons for suspicion.
See United States v. Chhunn,
III.
Maltais also argues that even if the initial stop was lawful, he was unrea
*556
sonably detained and subject to a
de facto
arrest when he was held for almost three hours before arrest, including at least 90 minutes in Danley’s patrol car. An investigative detention may turn into an arrest if it “lasts for an unreasonably long time or if officers use unreasonable force.”
United States v. Navarrete-Barron,
We do not believe the manner of detention — seating Maltais in Danley’s patrol vehicle — was objectively unreasonable under the circumstances. Danley’s reasonable suspicion gave him authority to detain Maltais while he verified or dispelled his suspicion.
See United States v. Dickson,
Maltais argues that the length of the detention was unreasonable and exceeded the permissible scope of a
Terry
stop. A detention may become a
de facto
arrest if it lasts for an unreasonably long time, but there is no rigid time limit on an investigatory detention.
United States v. Sharpe,
We have held that a one-hour detention upon reasonable suspicion to wait for a
*557
drug dog was reasonable.
United States v. Bloomfield,
[w]hen police need the assistance of a drug dog in roadside Terry stops, it will in general take time to obtain one; local government police forces and the state highway patrol cannot be expected to have drug dogs immediately available to all officers in the field at all times. Courts must consider the law enforcement purposes to be served by the stop as well as the time reasonably needed to effectuate those purposes.
Id.
(internal quotation omitted). In
White,
we similarly held that it was reasonable for an officer to detain a truck for an hour and twenty minutes while awaiting the arrival of a drug dog. We observed that the officer acted diligently to obtain the dog and that the delay was caused only by the remote location of the closest available dog.
Here, the district court found that Danley detained Maltais in the back of his patrol car for somewhere between 90 minutes and two hours, and that Maltais was detained for approximately two hours and 55 minutes before he was finally arrested.
“In assessing the effect of the length of the detention, we take into account whether the police diligently pursue their investigation.”
Sharpe,
While a detention of this length would be unreasonable under different circumstances,
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the unusual situation here made
*558
it impractical for the law enforcement agents to respond any sooner than they did. The officers acted with diligence and pursued the quickest and least intrusive means of investigation reasonably available to confirm or dispel their well-founded suspicions that Maltais was engaged in drug trafficking. “The Fourth Amendment does not require a policeman who lacks the precise level of information necessary for probable cause to arrest to simply shrug his shoulders and allow a crime to occur or a criminal to escape.”
Adams,
The judgment of the district court is affirmed.
Notes
. The Honorable Daniel L. Hovland, United States District Judge for the District of North Dakota.
. Although the district court's opinion is not entirely clear about which testimony it credited concerning the initial interaction between Danley and Maltais, it is evident that the court believed at least a good portion of Dan-ley's version, because it relied upon Danley's testimony in reaching its legal conclusion. Specifically, the district court relied on Dan-ley’s testimony that Maltais said he had traveled to the location over a route that Danley knew did not exist, and that Maltais was found approximately six miles from a paved road.
. After arriving at the scene, according to testimony about which the district court made no findings, the officers searched the area around the truck, in part because Olson was concerned that Maltais's companion from his earlier border crossing was not yet accounted for and could pose a threat. (Tr. 171). Agents Olson and Guyer then briefed all present on the situation, including the information they possessed regarding Maltais and the smuggling operation in which he was suspected of participating. (Tr. 172, 199-200). Olson and the other agents also contacted local law enforcement officials in an attempt to ascertain the proper local procedures and authority to conduct a dog sniff. (Tr. 126-27). In response to LaRocque’s request, the officers then repositioned their vehicles to light the truck and camper more brightly. (Tr. 172-73).
. Maltais also asserts that he suffered humiliation when Danley would not permit him to exit the patrol vehicle for 40 minutes after Maltais announced that he needed to urinate.
See United States v. Lego,
.
See, e.g., Place,
