Dеfendant Rafael Hernandez, after entering a conditional guilty plea in district court to possession with intent to distribute more than 500 grams of cocaine, 21 U.S.C. § 841(a)(1), (b)(1)(B), appeals the сourt’s denial of his motion to suppress evidence. Defendant alleges that the district court erroneously denied his motion to suppress because the seizure of his backpаck violated the Fourth Amendment. We have jurisdiction under 28 U.S.C. § 1291, and we affirm.
The facts in this case are essentially undisputed by the parties, and are consistent with the district court’s factual findings. On June 15, 1992, Dеfendant was a passenger on a Greyhound bus that entered the inspection area at the permanent border patrol checkpoint near Truth or Consequences, Nеw Mexico. The bus entered the checkpoint at approximately three o’clock in the morning and was sent to the secondary inspection site by United States Border Patrol agents.
At the secondary inspection site, two agents boarded the bus and began conducting an immigration inspection of the bus’s eighteen to twenty passengers. Border Patrol Agent Eliseo Silva, working from the front to the back of the bus, questioned various passengers regarding their citizenship. As he worked his way back, he noticed a blue backpack in an overhead storage compartment with no one sitting beneath it. Thinking that this was unusual, because in his experience passengers usually place their carry-on luggage directly above where they sit, Silva asked three persons near the bag if it belonged to them. After they all replied that it did not, Silva asked several times in a loud voice, without ever touching the backpaсk but while pointing towards it, if it belonged to anyone, making an effort to scan the entire bus and make eye contact with all the passengers. After once again receiving no response, Silva picked up the backpack and holding it in the air, asked again who owned it. Again, he received no response.
While he was holding the backpack, Agent Silva felt bundles or packages within it, and because no one claimed the backpack, he took it outside to be sniffed by a trained narcotics-sniffing dog. The dog alerted to the backрack, and agents discovered two bundles of cocaine in the backpack upon opening it.
Silva and assisting agent Jose Alvarado then boarded the bus in a renewed effort to identify the owner of the backpack. Defendant, who was sitting approximately seven or eight rows behind the backpack and on the opposite side of the aisle, wаs identified by a passenger sitting near the backpack as its owner. The agents approached Defendant and asked him to step from the bus, at which time Defendant denied ownership.
From these facts, the district court found that Defendant lacked an expectation of privacy in the backpack. The court based this finding on the fact that the bus was not сrowded, and as a result, Defendant was not required to place the backpack seven or eight rows away, and on the fact that Defendant did not identify the backpack аs his own in response to Agent Silva’s numerous questions regarding ownership. Thus, the court concluded, Defendant had abandoned the backpack and did not have standing to chal *946 lenge its search. 1
Before we address the issue of whether Defendant abandoned his backpack, we must first address whether Agents Silva and Alvarado violated Defendant’s Fourth Amendment rights by stopping the bus, referring it to the secondary checkpoint, entering the bus and questioning the bus’s passengers about the backpack-—actions which resulted in the agents’ determination that the backpack was abandoned. We therefore briefly summarize the law regarding permanent border checkpoint stops.
A routine permanent checkpoint stop must be brief and unintrusive, and “generаlly involves questions concerning the motorist’s citizenship or immigration status, and a request for documentation.”
United States v. Rascon-Ortiz,
“While there is no single definition of what constitutes a suspicious circumstance, border patrol agents are given deference in relying upon their law enforcement training and past expеrience in deciding whether a suspicious circumstance exists.”
Id.
(citing
Sanders,
The rules regarding pеrmanent border patrol checkpoints do not change merely because Defendant was on board a bus. When a bus enters the checkpoint and is referred to the secondary inspection location, border patrol agents are permitted to board the bus, question its passengers regarding citizenship and immigration status, make a brief visual inspection of their surroundings, and question the passengers regarding suspicious circumstances.
See United States v. Ray,
*947
A warrantless search and seizure of abandoned property is not unreasonable under the Fourth Amendment.
United States v. Trimble,
The test for abandonment is whether an individual has retained any reasonable expectation of privacy in the object.
Id.; Jones,
We conclude that the district court’s determination that Defendant had abandoned his backpack was not clearly erroneous. Defendant elected to distance himself from the bаckpack upon boarding the bus and repeatedly failed to acknowledge ownership of the backpack after Agent Silva repeatedly questioned the bus passengers regarding the backpack’s ownership. Furthermore, we have already held that the agents’ actions prior to determining the backpack was abandoned did not violatе the Fourth Amendment, see supra, making Defendant’s abandonment voluntary. Thus, we affirm the district court’s determination that Defendant lacked standing to complain of a Fourth Amendment violation becausе he voluntarily abandoned the backpack; therefore, we affirm the district court’s denial of Defendant’s motion to suppress.
AFFIRMED.
Notes
. The district court made an alternative finding that even if Defendant did have standing to challenge the search, the court did not believe that Silva had seized the backpack within the meaning of the Fourth Amendment by merely holding it in the air to ask further questions regarding ownership. Thus, the district court found that Silva's detection of the bundles gave him reasonable suspicion to believe the backpack contained contrabаnd and to subject the backpack to a dog sniff. Then, at the point when the dog alerted to the backpack, the agents had probable cause to search it. Because we agree with the district court's determination that the backpack was abandoned before Silva touched it, we do not address this alternative finding.
