OPINION
Appellant Jermaine Smith challenges the decision of the district court to deny his motion to suppress a firearm that was recovered from his person by a police officer. We must decide whether Smith’s actions constituted submission to a police officer’s show of authority, thereby triggering the Fourth Amendment’s requirement that the officer have reasonable suspicion before effectuating a seizure. If Smith was seized, and if the seizure was not constitutional, then the recovered firearm should be suppressed as the fruit of the poisonous tree.
See United States v. Crawford,
I
In 2009, Smith crossed the street in front of a patrol car driven by Officer Tyler Dominguez of the Las Vegas Metropolitan Police Department. 1 Officer Dominguez activated his patrol car’s siren twice, pulled his car to the curb, exited the vehicle, and called for Smith to stop and come stand in front of the car. Smith turned toward the officer and asked either “Who? Me?” or “What for?” Officer Dominguez confirmed that he was addressing Smith, and repeated the command that Smith come stand in front of the car. According to Smith’s testimony, although Smith had at first stepped toward the patrol car when he heard the siren, he then backed away after the officer got out of the vehicle and told Smith to stand in front of the car. Smith also said that, when he asked if he was under arrest, Officer Dominguez replied that Smith was not under arrest; however, the officer again ordered him to stand in front of the car. Smith continued to back away, and then turned and ran when he saw the officer reach for what Smith believed was a gun. Officer Dominguez pursued Smith on foot. The officer ordered Smith to stop, and threatened to use his Taser if Smith did not stop. Smith stopped involuntarily when he tripped and fell, allowing the officer to catch up with him. With Smith prone on the ground, Officer Dominguez approached him to place him in handcuffs and search him for weapons. While Dominguez approached, Smith stated that he had a gun in his pocket. Officer Dominguez recovered a Walther P99 nine-millimeter handgun from Smith’s person.
Smith was indicted for being a felon in possession of a firearm in violation of 18 U.S.C. §§ 922(g)(1) and 924(a)(2). Smith pled not guilty, and filed a motion to sup *892 press the firearm, which the district court denied. Smith then entered a conditional guilty plea pursuant to a written agreement, retaining the right to appeal the court’s ruling on his unsuccessful motion to suppress the firearm. The district court sentenced Smith to seventy-one months in prison and three years of supervised release. Smith timely appealed the denial of his motion to suppress the firearm.
II
Smith contends that the district court erred when it denied his motion to suppress the firearm. We review the district court’s denial of the motion to suppress de novo.
Crawford,
Smith claims that his Fourth Amendment rights were violated because, when Officer Dominguez first attempted to stop him, the officer did not have a reasonable suspicion that Smith was engaged in wrongdoing.
See Terry v. Ohio,
We agree with the district court that Smith was not seized during his initial encounter with Officer Dominguez. Because Smith was not then seized, we need not decide whether the officer had reasonable suspicion justifying a Terry stop before Smith fled. Smith’s Fourth Amendment rights were not violated by the attempted stop, even if the officer did not have reasonable suspicion, because the attempted stop was not a seizure for Fourth Amendment purposes. 2
Smith claims that he was seized when he paused momentarily, turned to and moved toward Officer Dominguez, and engaged in a short verbal exchange. However, a person is not “seized” within the meaning of the Fourth Amendment unless “by means of physical force or show of authority, his freedom of movement is restrained.”
United States v. Mendenhall,
*893
In this case, where the officer did not use physical force during the initial encounter, the question is whether Smith’s actions constituted submission to Officer Dominguez’s show of authority. The Supreme Court has held that a seizure does not occur where the subject does not yield.
Hodari D.,
The Third Circuit reached a similar result in an analogous case,
United States v. Valentine,
Ill
Although Smith was not seized initially, he was indisputably seized later, after he fled and was apprehended by Officer Dominguez. The officer had reasonable suspicion to effectuate a seizure after Smith’s flight.
The Supreme Court has held that a person’s “headlong,” “unprovoked” flight upon seeing a police officer, when it occurs in a high-crime neighborhood, is sufficient to establish reasonable suspicion that the person is involved in criminal activity.
Illinois v. Wardlow,
Here, Smith’s initial reaction was not suspicious. Had he simply continued to go about his business, or walked away, Officer Dominguez would not have had reasonable suspicion to seize him.
See id.
at 125,
There may be circumstances where a person’s flight has a perfectly innocent and reasonable explanation. Nevertheless, the circumstances here indicate that Smith’s flight was sufficient to engender reasonable suspicion. It is undisputed that Smith was in a high-crime neighborhood during the events in question, that Officer Dominguez clearly identified himself as a police officer, and that Smith burst into headlong flight for no other reason than to evade Officer Dominguez. The officer’s determination that Smith’s sudden flight was suggestive of wrongdoing was reasonable under these circumstances.
Because Smith was not seized before he fled, and because Smith’s flight under these circumstances created a reasonable suspicion that he was involved in criminal activity, Officer Dominguez did not violate Smith’s Fourth Amendment rights, and the motion to suppress the firearm was correctly denied.
AFFIRMED.
Notes
. Smith and the government present partially different accounts of the facts. The district court did not make a factual finding about the tmth of Smith's testimony, but rather held that, even under Smith's version of the facts, he was not seized before he fled from the officer. We also conclude that, even under Smith’s account of the facts, there was no seizure before Smith's flight.
. Because we decide that Smith was not seized prior to his flight, we need not reach the district court’s alternative holding that Smith’s flight was an intervening event that purged the taint of an illegal seizure.
