Opinion
Mаy police officers searching a private home pursuant to a search warrant briefly detain a person who enters onto the premises at the same time as officers are beginning the search? Under the circumstances *360 of this case, we conclude the officers’ initial detention of defendant was justified by the need to determine defendant’s identity and connection to the premises and to protect the officers’ own safety.
Following the superior court’s denial of his motion to suppress evidence (Pen. Code, § 1538.5), defendant Ronny Glaser pled no contest to a charge of possession of methamphetamine (Health & Saf. Code, § 11377, subd. (a)) and was sentenced to state prison. The Court of Appeal reversed, holding defendant’s suppression motion should have been granted. We reverse the judgment of the Court of Appeal and remand the cause to that court for further proceedings.
Facts and Procedural Background
The facts are taken from the evidence presented at the hearing on defendant’s motion to suppress. Michael Murray, an investigator for the Glenn County District Attorney assigned to the Glenn County Narcotics Task Force, testified he and five other officers from various agenciés executed a search warrant at the home of Gregory Wagenman on February 19, 1993. The search began sometime between 6 p.m. and 7 p.m. The evening was dark and the weather stormy. The residential search was apparently for illegal drugs or associated items. 1
As the search party approached the residence, Murray saw defendant, in a pickup truck, pass them on the road. When the officers arrived at the residence the pickup was parked in the driveway. The driveway led to the backyard of the house, which was entered through a gate located about 50 feet from the house itself. Murray estimated defendant arrived 20 seconds before the searchers. When the officers arrived, defendant had alighted from his truck and was “about to open the gate.”
Murray, the only officer to testify at the suppression hearing, did not witness defendant’s initial detention. Upon arrival Murray went inside to help secure the interior of the house. When he returned to the driveway three or four minutes later, he found defendant already detained at gunpoint by Officer Hughes and Lieutenant Oliver.
Defendant testified he was “at the gate” when he first saw and heard Officer Hughes. He did not recognize Hughes, who was in plain clothes, as *361 a police officer and did not see the officer’s gun. Defendant was “standing in a dark spоt and he [Hughes] yelled something,” but defendant did not understand what he was saying: “I heard him say a phrase at one point, I thought he was talking about the weather because it was stormy, probably a good two minutes before I actually understood what he was talking about when he said, get down on the ground.” On cross-examination, defendant denied he was under the influence of drugs at the time of his detention, but explained he had “just woke[n] up.”
Eventually defendant understood he was being ordered to lie face down on the gravel driveway. According to defendant, Hughes told him “to get down on the ground immediately, at gunpoint and said if I did not do so he would blow my brains out.” Defendant obeyed, and Hughes then cuffed his hands behind his back. Another officer arrived within five minutes, and about a minute later defendant was allowed to stand up and was led into the house. Defendant testified he first saw Murray inside the hоuse, but conceded Murray may have been present while he was detained outside as well.
We are concerned here only with the validity of the initial period of detention by Officer Hughes, ending when Murray returned to the driveway area. The propriety of defendant’s continued detention from that point on, and of the ensuing patdown and other searches, was not decided by the Court of Appeal or raised in the petition, and we decline to decide that question. The events following Murray’s return to the driveway, therefore, will be described only briefly and only to provide factual context. Information acquired by the police after the initial detention, of course, is not relevant to the legality of that detention.
Murray, shining his flashlight on defendant’s face, recognized him; he knew defendant had been arrested on narcotics and wеapons charges during a previous search of the Wagenman residence and that defendant had at some point suffered a felony conviction and been committed to the California Rehabilitation Center. Murray watched as Hughes patted defendant down for weapons, removing from his coat pocket a glass pipe suitable for smoking methamphetamine and marijuana. Murray then contacted and detained a woman who was sitting in defendant’s pickup truck. Defendant was taken inside and further detained. Murray subsequently searched defendant’s truck, in which he found syringes and a police scanner radio, and defendant’s person, on which he found three packets of methamphetamine powder.
Defendant was charged with possession and use of methamphetamine (Health & Saf. Code, §§ 11377, subd. (a), 11550, subd. (a)) and use of a scаnner to intercept police radio communications (Pen. Code, § 636.5). He *362 moved in the superior court to suppress the evidence found in the searches of his truck and person. The court ruled both the initial detention and the subsequent searches proper. The court expressly found that the residence was being searched pursuant to warrant, that Hughes detained and “secured” defendant at the gate “for purposes of officer’s safety,” and that Murray observed and recognized defendant while he was being detained outside the house.
Defendant pleaded no contest to the possession charge, and the remaining charges were dismissed. Defendant appealed his conviction on grounds of erroneous denial of the suppression motion. (See Pen. Code, § 1538.5, subd. (m).) The Court of Appeal reversed. The court agreed with defendant’s contention “the police did not have articulable suspicion to detain him as he was merely a visitor at the Wagenman residence.” Relying on
People
v.
Gallant
(1990)
We granted review on the People’s petition, which raised only the single issue decided by the Court of Appeal, to wit, the legality of defendant’s initial detention.
Discussion
I
The standard of appellate review of a triаl court’s ruling on a motion to suppress is well established. We defer to the trial court’s factual findings, express or implied, where supported by substantial evidence. In determining whether, on the facts so found, the search or seizure was reasonable under the Fourth Amendment, we exercise our independent judgment.
(People
v.
Leyba
(1981)
The superior court’s express factual findings are supported by substantial evidence; indeed, they are largely undisputed. There is no dispute the officers had a warrant to search the Wagenman residence or that Officer Hughes stopped defendant at the gate to the backyard.
*363
The People do not dispute that Hughes effected a detention of defendant and, hence, a seizure of his person. (See
Florida
v.
Royer
(1983)
To decide whether relevant evidence obtained by assertedly unlawful means must be excluded in a trial for crimes allegedly committed after June 8, 1982, we look exclusively to whether its suppression is required by the United States Constitution.
(People
v.
Souza, supra,
In the landmark case of
Terry
v.
Ohio, supra,
Central to the
Terry
court’s understanding of reasonableness is the requirement of “specifiсity in the information upon which police action is predicated . . . .”
(Terry, supra,
*364
In
Terry,
two government interests justified the limited seizure and search: the interest in effective crime prevention, which dictates police investigation of reasonable suspicions of criminal activity, and the police officer’s need to ensure his or her safety while engaged in investigation or other activities.
(Terry, supra,
392 U.S. at pp. 22-24 [20 L.Ed.2d at pp. 906-908].) In view of the American criminal’s “long tradition of armed violence,” the high court reasoned, “we cannot blind ourselves to the need for law enforcement officers to protect themselves and other prosрective victims of violence in situations where they may lack probable cause for an arrest.”
(Id.
at pp. 23-24 [20 L.Ed.2d at pp. 907-908].) Consequently, the court concluded officers may undertake a properly limited search for weapons if “a reasonably prudent man in the circumstances would be warranted in the belief that his safety or that of others was in danger.”
(Id.
at p. 27 [
In
Michigan
v.
Summers
(1981)
The high court focused on whether the defendant’s initial detention met “the ultimate standard of reasonableness embodied in the Fourth Amendment.”
(Summers, supra,
452 U.S. at pp. 699-700 [
*365 The court then identified three police interests furthered by the detention: preventing flight in the event incriminating evidence is found, minimizing risk of harm to the officers, and facilitating an orderly search through cooperation of the residents, who would have access to locked areas. On the matter of officer safety, the court noted that “the execution of a warrant to search for narcotics is the kind of transaction that may give rise to sudden violence or frantic efforts to conceal or destroy evidence. The risk of hаrm to both the police and the occupants is minimized if the officers routinely exercise unquestioned command of the situation.” (Summers, supra, 452 U.S. at pp. 702-703 [69 L.Ed.2d at pp. 349-350], fn. omitted.)
Finally, the court examined “the nature of the articulable and individualized suspicion on which the police base the detention of the occupant of a home subject to a search warrant.”
(Summers, supra,
II
Applying the principles enunciated in the above decisions, we conclude Officer Hughes’s initial brief detention of defendant was justified by the need to determine what connection defendant, who appeared to be more than a stranger or casual visitor, had to the premises, and by the related need to ensure officer safety and security at the site of a search for narcotics. To test the detention against “the ultimate standard of reasonableness embodied in the Fourth Amendment”
(Summers, supra,
452 U.S. at pp. 699-700 [
We examine first the “character of the official intrusion.”
(Summers, supra,
In addition, both defendant and investigator Murray testified defendant was detained at gunpoint, a factor increasing the intrusiveness of the detention.
2
As defendant points out, under some circumstances a detention at gunpoint may be deemed a full arrest, justifiable only by the existence of probable cause. (E.g.,
United States
v.
Ramos-Zaragosa
(9th Cir. 1975)
The scope of intrusion permitted without a warrant or probable cause “will vary to some extent with the particular facts and circumstances of each case,” and there is no “litmus-paper test” for distinguishing an investigatory stop from a full arrest.
(Florida
v.
Royer, supra,
460 U.S. at pp. 500, 506 [75 L.Ed.2d at pp. 238, 242].) Consequently, we must consider the totality of the circumstances
(People
v.
Souza, supra, 9
Cal.4th at p. 235) to determine if the means used by the police, including detention at gunpoint, were justified by the need of a “reasonably prudent” officer
(Terry, supra,
Several circumstances diminish the intrusiveness of the initial detention here. First and foremost, it was extremely brief. Defendant testified “probably a good two minutes” elapsed before he understood what Hughes was
*367
saying and submitted to detention. Murray testified he was inside the house only three or four minutes before returning to the gate area. It can thus be inferred Hughes detained defendant for a period of two minutes or less before Murray returned to the area. While the length of the detention is only one circumstance, here its brevity weighs heavily in favor of a finding of reasonableness. (See
United States
v.
Sharpe
(1985)
Second, the detention occurred not in a public place, but at the back gate of a private residence and was apparently witnessed only by another police officer (and possibly by a passenger in defendant’s truck). The embarrassment and stigma sometimes associated with a detention were thus reduced or eliminated. (See
Summers, supra,
We turn next to the government interests justifying defendant’s detention. Two interrelated justifications are readily identifiable on this record: the officers’ concern for security while they executed the search warrant and their interest in determining what connection, if any, defendant had with the premises being searched.
The police interest in protecting against violence during the search of a home for narcotics has been widely recognized. “In the narcotics business, ‘firearms are as much “tools of the trade” as are most commonly recognized articles of narcotics paraphernalia.’ ”
(Ybarra
v.
Illinois
(1979)
The government interest in determining the identity of a person entering premises being searched is related to, though broader than, the officers’ need for security. The risk posed by residents or familiars of the household, who may be involved in the criminal activities therein, is obviously greater than that posed by mere visitors who happen unwittingly on the scene. In addition, determining the identity and connection to the premises of a person who is already present on the search site, or who enters during the search, allows officers to ascertain whether the other interests identified in
Summers
warrant detention of the person during the search. The “legitimate law enforcement interest in preventing flight in the event that incriminating evidence is found”
(Summers, supra,
Having identified the relevant police interests, we weigh their application in this case against the invasion of defendant’s personal security
*369
involved in his initial detention, keeping always in mind that “in justifying the particular intrusion the police officer must be able to point to specific and articulable facts which, taken together with rational inferences from those facts, reasonably warrant that intrusion.”
(Terry, supra,
The officers, arriving after dark on a stormy night to execute a search warrant, saw defendant standing in an unlit spot in the driveway. Although investigator Murray was familiar with defendant, neither he nor any of the other officers recognized him under those conditions. Defendant was about to pass through a gate into the backyard of the house being searched. Defendant’s apparent familiarity with the premises and his entry through the backyard suggested he was not a stranger or chance visitor, but his exact connection to the house was not immediately apparent. Determining the nature of that connection would allow the police to evaluate the applicability of the interests identified in Summers, that is, whether defendant would wish to be present to observe the search, whether he was likely to flee if contraband was discovered, and whether his presence would assist in orderly execution of the search. Defendant, moreover, was in the process of entering the premises and, if unimpeded, would come up behind the officers searching the house and outbuildings. Under these circumstances, Officer Hughes’s decision to contact and identify defendant was not only reasonable, but virtually unavoidable.
According to defendant’s own testimony, Hughes tried unsuccessfully to communicate with him for some time, perhaps as long as two minutes. The noise of the storm, and possibly some degree of disorientation from having just awakened, prevented defendant from understanding what Hughes was saying during this time. Hughes was thus faced with an unidentified person who appeared to be a resident or familiar visitor of a house in which, Hughes had probable cause to believe, criminal drug activity was occurring—a person who was standing where he could not be clearly seen under the prevailing conditions, who was unresponsive to verbal attempts at contact, and who, if left alone, would walk into the middle of a search being conducted by several other officers. Hughes had no practical choice but to detain defendant, and, under these circumstances, the means used—drawing his weapon and ordering defendant to the ground briefly for handcuffing— were not unreasonable. They are steps a “reasonably prudent” officer
(Terry, supra,
No evidence was presented as to what inquiries, if any, Hughes made of defendant from the time defendant was successfully detainеd until Murray’s *370 return and recognition of defendant, or what information Hughes acquired during that period. The period, however, was too brief—two minutes or less—to give rise to any implication Hughes unnecessarily prolonged the initial detention. As already discussed, the propriety of the officers’ actions after Murray’s return (including the further detention of defendant and the eventual search of his vehicle and person, which produced the evidence of possession) is not before us.
Defendant asserts he was “simply a visitor to the premises,” and neither the holding nor the rationale of
Summers
is therefore applicable. We find this reasoning unpersuasive.
Summers’s
blanket rule allowing detention, it is true, applies only to “occupants” of a residence being searched. In its opinion, moreover, the high court also used the terms “residents” and “residence” to describe the detainee’s connection to the premises
(Summers, supra,
452 U.S. at pp. 701, 702, 704 [69 L.Ed.2d at pp. 348-349, 349-350, 350-351]), and some aspects of the court’s rationale logically apply only to those with ownership, control or knowledge of the premises being searched. Noting these aspects of the opinion, Professor LaFave concludes “it would seem that the word ‘occupants’ is not to be loosely construed as covering anyone present, but instead is to be interpreted literally.” (2 LaFave, Search and Seizure (2d ed. 1987) § 4.9(e), pp. 309-310, fns. omitted; but see
U.S.
v.
Fountain
(6th Cir. 1993)
That only occupant detentions fall within
Summers’
s safe harbor, however, does not imply nonoccupants may never be detained without probable cause during a search. (See 2 LaFave, Search and Seizure,
supra,
§ 4.9(e), p. 311 [concluding
Summers
does not, “by negative implication, prohibit application of
Terry
to uphold a detention on reasonable suspicion, based on the facts of the particular case, of someone present where a search warrant is to be executed’’]; accord,
State
v.
Torres
(1985)
As we have previously noted, when defendant was detained, he was in the process of entering the premises through a gate leading into the backyard. The officers who stopped him did not know who he was. Although investigator Murray eventually identified defendant as someone other than the house’s owner, no evidence suggested even Murray knew whether defendant resided at the house or was merely visiting. While defendant may be correct he was not an occupant in the sense the
Summers
court used that term, the officers who detained him did not know that at the time. (See
U.S.
v.
*371
Jaramillo
(2d Cir. 1994)
Like the Court of Appeal, defendant relies heavily on
People
v.
Gallant, supra,
*372
The appellate court held the detention illegal because of the absence of specific and articulable facts linking the defendant to the criminal activities in the residence. “In the absence of evidence of their particular involvement in the illegal activity, friends, family and the Fuller Brush man should be free to knock on the door without being ordered inside at gunpoint and frisked.”
(Gallant, supra,
Gallant is clearly distinguishable. Unlike Mr. Gallant, and presumably unlike the Fuller Brush man, defendant did not walk up to the front door and knock. Rather, he was on the point of entering the premises, apparently without seeking permission from the residents, through a backyard gate. Unlike the officers in Gallant, Officer Hughes could not immediately identify defendant as a nonresident. Defendant arrived, moreover, simultaneously with the beginning of the search, rather than after the premises had long been secured, as in Gallant. His nonresponsive manner made questioning him as to his identity and connection to the house difficult. The darkness, the storm, and defendant’s demonstrated intent to enter the yard created a danger of harm to him and the searching officers if he were allowed to proceed unimpedеd. These specific and articulable facts, not present in Gallant, gave the officers here grounds to suspect defendant was more than a chance visitor and to fear harm if he was not contacted and secured in some manner. 5
In the trial court, defendant argued the police, instead of detaining him, should have simply told him the house was being searched and ordered him *373 to “buzz off.” The circumstances here, however, did not lend themselves to such an easy solution. Defendant’s unresponsiveness made inquiry without detention difficult or impossible; the officers, who had reason to suspect he was more than a chance visitor, therefore did not act unreasonably in detaining defendant rather than simply warning him off.
A complete stranger to the premises arriving during the search might, under many circumstances, be sent on his or her way with little fear of danger to the officers conducting the search. In contrast, a resident or intimate of the home, who may have criminal interests there to protect, may present a substantial risk even if he or she leaves when encountered by the police. The police are not required to ignore the danger that persons possibly involved in crime, who leave the premises, may return during the search, with potentially fatal consequences for themselves or the officers. (See
U.S.
v.
Reid, supra,
Innocent explanations for defendant’s entry onto the property could certainly have been imagined and may have been as likely as those suggesting risk and suspicion. As we have recently reiterated, however, that a person’s conduct is consistent with innocent behavior does not necessarily defeat the existence of reasonаble cause to detain.
(People
v.
Souza, supra, 9
Cal.4th at pp. 233-235.) What is required is not the
absence
of innocent explanation, but the
existence
of “specific and articulable facts which, taken together with rational inferences from those facts, reasonably warrant that intrusion.”
(Terry, supra,
III
The People urge as a general rule that when police have a warrant to search a home, “the mere arrival or presence of someone at the warranted
*374
premises, by itself,” justifies a detention for the purpose of determining identity and connection to the searched premises. We decline to adopt the proposed rule. Such a blanket approval of detentions in the course of searches would present too great a danger “of slippage into a guilt by association pattern whereby anyone seen near prоspective drug activity becomes fair game for a stop and frisk.”
(U.S.
v.
Reid, supra,
When, in the course of initiating a search under warrant of a private residence for illegal drugs or related items, police officers encounter on the premises a person whose identity and connection to the premises are unknown and cannot immediately be determined without detaining the person, the officers may constitutionally detain him or her for the period of time required and in the manner necessary to make those determinations and to protect the safety of all present during the detention. If the person is determined to be an occupant of the home to be searched, he or she may be detained, pursuant to
Summers,
for the duration of the search.
(Summers, supra,
In the unstable situation presented at the onset of a search of a private home for narcotics, the searching officers need to locate and identify all persons on the premises. That step is essential to protecting each of the three interests identified in Summers, supra, 452 U.S. at pages 702-703 [69 L.Ed.2d at pages 349-350]: ensuring the safety of the officers and others present, preventing flight of residents involved in the suspected criminal activity, and facilitating orderly completion of the search. In many instances the identity and resident оr nonresident status of a person encountered as the search is beginning are not immediately apparent to the searching officers, and cannot safely be determined without momentarily restricting the person’s freedom of movement. As the Summers court noted, in such ambiguous and fluid circumstances the risk of violence is minimized if the police exercise complete command of the search site. (Ibid.)
Under
Terry
the touchstone of reasonableness for search or seizure without probable cause is the presence of “specific and articulable facts” that reasonably warrant the intrusion on personal liberty and privacy.
(Terry, supra,
Conclusion
The circumstances in which the police officers encountered defendant at the residence to be searched gave them sufficient grounds to detain him briefly for the purposes of identification and protection of the officers’ safety. The Court of Appeal erroneously held the initial detention illegal and did not decide the remaining questions raised by the suppression motion. The judgment of the Court of Appeal is therefore reversed, and the cause is remanded to that court for further proceedings consistent with our opinion.
Lucas, C. J., Mosk, J., Kennard, J., Arabian, J., Baxter, J., and George, J., concurred.
Notes
The warrant is not in the record, and there was no explicit testimony the search was for illegal drugs. The inference, however, is inescapable. Murray testified he had been associated with the narcotics task force for 15 years and he described a highway patrolman participating in the search as a “narcotics assignee.” A previous search of the Wagenman residence had resulted in narcotics offense convictions. In his written suppression motion, defendant stated he arrived at the Wagenman residence “while the members of the Glenn County Narcotics task force was [s/c] in the process of serving a search warrant for drugs.”
Defendant testified he was also ordered briefly to the ground and handcuffed during the period before investigator Murray arrived. Murray, in a contrasting but not necessarily conflicting account, testified defendant was not yet handcuffed, and was standing, when he arrived. For purposes of our discussion, we assume defendant was, as he testified, placed on the ground and handcuffed immediately.
In
Ybarra
v.
Illinois, supra,
The “endless variations in the facts and circumstances” of detention cases
(Florida
v.
Royer, supra,
The other decisions cited by defendant are similarly distinguishable. At issue in
United States
v.
Cole
(5th Cir. 1980)
