Opinion
After a trial to the court, the defendant, Jason Mann, was convicted of possession of a narcotic substance with intent to sell by a person who is not drug-dependant in violation of General Statutes § 21a-278 (b), possession of a narcotic substance with intent to sell within 1500 feet of a school in violation of General Statutes § 21a-278a (b), and possession of a controlled substance in violation of General Statutes § 21a-279 (c). The trial court rendered judgment sentencing the defendant to a total effective term of seventeen years imprisonment, suspended after twelve years, and five years probation. On appeal to the Appellate Court, the defendant challenged the trial court’s denial of his motion to suppress certain evidence that he claimed had been seized by the police in violation of his rights under the fourth amendment to the United States constitution
1
during a warrantless patdown search of the defendant while he was inside an apartment. The Appellate Court
*303
agreed with the defendant that the search was constitutionally infirm and, therefore, reversed the trial court’s judgment and remanded the case with direction to grant the defendant’s motion to suppress and for further proceedings according to law.
2
State
v.
Mann,
The opinion of the Appellate Court sets forth the following relevant facts. “At approximately 4:25 a.m. on October 3, 2000, three uniformed New Haven police officers, Christopher Rubino, Julie Esposito and Victor Fuentes, responded to a call that a dispute was taking place on Stevens Street near Sylvan Avenue in New Haven. When the officers arrived in the area, they spoke to a woman who identified herself as Tina Jones. Jones admitted having been part of the dispute on Stevens Street 3 and volunteered information about drug activity in the area. She told the officers that an apartment at 130 Sylvan Avenue had just received a shipment of drugs, that the recipient of the drugs was a black male, that ‘they dealt everything out of that apartment’ and that she was unsure as to whether there were weapons in the apartment. Jones described the apartment as being on the first floor, last door on the left, when the building is entered from the rear.
*304
“After receiving the information from Jones, the officers proceeded to the apartment at 130 Sylvan Avenue. They entered 130 Sylvan Avenue from the unlocked rear door. At approximately 5 a.m., Rubino knocked on the door of the apartment described by Jones. Although in uniform, the officers did not at anytime announce themselves as police. The defendant responded by opening the door one and one-half to two feet, which was wide enough for the defendant’s entire body to be visible. Upon opening the door and seeing the police, the defendant attempted to close the door using his left hand and the left side of his body. Simultaneously, the defendant placed his right hand into his right pocket. When Rubino saw the defendant place his right hand in his pocket, he drew his gun, entered the apartment, placed the defendant against a wall and conducted what he described as ‘a Terry
4
patdown’ for weapons. No weapons were found, but Rubino did, in conducting the patdown, determine that the defendant’s right pants pocket ‘had a quantity of plastic baggies with little rock-like things in them,’ which Rubino identified as possible narcotics. After completing the patdown and assuring himself that the defendant had no weapons, Rubino reached into the defendant’s right pocket and withdrew its contents, which included fifty small bags containing crack cocaine and four small bags containing marijuana. Thereafter, the defendant was arrested and charged with various offenses relating to his possession of the crack cocaine and the marijuana.”
5
State
v. Mann, supra,
*305 The defendant filed a motion to suppress the crack cocaine and marijuana seized during the patdown search of his person. After an evidentiary hearing, the trial court issued a ruling from the bench denying the defendant’s motion. In so ruling, the trial court relied on the following factual findings. After speaking with Jones, the officers approached the apartment that she had identified. The officers could hear voices coming from inside the apartment. Rubino knocked on the apartment door two or three times but did not otherwise identify or announce himself or his fellow officers. The defendant then opened the door and immediately tried to shut it while simultaneously reaching into his pocket, giving the officers “the choice of retreating, and possibly being shot through [the] wooden door, or advancing upon the defendant to enable the police officers to conduct a patdown [search of the defendant] ... to determine whether . . . [he] was armed.” The trial court emphasized that, because the incident had lasted only a few seconds, and because Rubino “was only one and [one]-half feet away from the defendant,” Rubino’s decision to conduct a patdown search of the defendant for weapons necessarily was a “split-second” decision. The court further observed that, under the circumstances, including the defendant’s “furtive acts,” the officers’ safety was in “extreme jeopardy,” and that “retreating would [not] have ensured the safety of those officers.” 6 Finally, the court determined that the officers had a reasonable and articulable suspicion that the defendant was armed and posed a danger to them, and that he “was about to commit a crime,” namely, possessing a weapon that “could be fired . . . .” 7
*306 On the basis of the foregoing findings, the trial court concluded that the patdown search of the defendant did not violate his fourth amendment rights. Specifically, the trial court determined that, under all of the circumstances, the defendant’s conduct had created an exigency justifying the officers’ warrantless entry across the threshold of the apartment for the limited purpose of conducting a patdown search of the defendant for weapons. 8
On appeal to the Appellate Court, the defendant claimed that the trial court improperly had denied his motion to suppress the crack cocaine and the marijuana seized by the officers as a result of the patdown search. The state raised three claims in support of its contrary contention. First, the state claimed that the search was justified under the exigent circumstances exception to the warrant requirement. See, e.g.,
State
v.
Gant,
On appeal to this court, the state’s primary claim is that the patdown search of the defendant was constitutionally permissible because the police, while conduct *308 ing a lawful investigation, were confronted with an emergency situation stemming from the fact that the defendant, who, upon voluntarily opening the apartment door for the police, engaged in conduct that reasonably caused the police to suspect that he was armed and posed a danger to them. The defendant contends that the Appellate Court properly determined that the patdown search violated the fourth amendment because it occurred inside a home, without a warrant and without probable cause. 9 The defendant also maintains that the police lacked even a reasonable and articulable suspicion that the defendant posed a danger to them. We agree with the state that the police were justified in conducting the patdown search of the defendant. This conclusion is predicated on two subordinate determinations. First, the fourth amendment does not categorically bar the police from conducting a warrantless patdown search of a person who, upon voluntarily opening his door in response to a lawful police inquiry, engages in conduct while standing inside the doorway that leads the police reasonably to suspect that he is armed and dangerous. Second, the trial court properly determined that the police had a reasonable and articulable suspicion that the defendant was armed and posed a danger to them.
I
We begin our review of the fundamental constitutional issue presented by this appeal by noting that,
*309
when police officers knock on the door of a dwelling and an occupant voluntarily opens the door, the resulting encounter, in the absence of coercive police conduct, generally is deemed to be consensual. E.g.,
Estate of Smith
v.
Marasco,
“It goes without saying that the Fourth Amendment bars only unreasonable searches and seizures,
Skinner
v.
Railway Labor Executives’ Assn.,
In
Terry
v.
Ohio,
supra,
Although the United States Supreme Court has yet to apply the
Terry
doctrine to “knock and talk” investigations, the court has extended the reasonable suspi
*312
cion standard announced in
Terry
to other contexts involving possible jeopardy to the immediate safety of law enforcement officers. For example, in
Michigan
v.
Long,
The United States Supreme Court also extended the
Terry
doctrine to certain protective searches of a suspect’s home in
Maryland
v.
Buie,
supra,
Long
and
Buie
both demonstrate that when the immediate safety of law enforcement officers is in jeopardy, the reasonableness of a protective search is determined by balancing the need to conduct the search against the nature of the intrusion occasioned by the search. See
Terry
v.
Ohio,
supra,
It is indisputable that the home is afforded heightened protection under the fourth amendment. “We have long acknowledged that entry by the government into a person’s home is the chief evil against which the wording of the Fourth Amendment is directed.” (Internal quotation marks omitted.)
State
v.
Eady,
Buie
makes clear, however, that the firm line drawn at the entrance to the home does not preclude every warrantless search of a residence undertaken on less than probable cause.
13
Maryland
v.
Buie,
supra, 494
*315
U.S. 327; see also
United States
v.
Knights,
Of course, the fact that a patdown search occurs inside a home is not irrelevant to our analysis. The balancing test announced in
Terry
requires that we consider both the government’s interest in conducting the search and the nature and quality of the intrusion on the rights of the individual.
Terry
v.
Ohio,
supra,
Furthermore, the intrusion into an individual’s privacy must be balanced against the government’s overwhelming interest in conducting the limited search for weapons. As in
Terry,
“in addition [to the governmental interest in investigating crime], there is the more immediate interest of the police officer in taking steps to assure himself that the person with whom he is dealing is not armed with a weapon that could unexpectedly and fatally be used against him.”
Terry
v.
Ohio,
supra,
In view of the state’s weighty interest in promoting the safety of its police officers and the diminished expectation of privacy that the occupant of a dwelling has in what the police can observe through a door that that occupant voluntarily has opened, we conclude that it is constitutionally permissible for the police to conduct a limited patdown search of the occupant, even though that occupant is located inside the doorway, if the search is supported by a reasonable and articulable suspicion that the occupant is armed and dangerous. “[W]hile we respect the constitutional rights against unreasonable search and seizure of the citizemy, [c]er
*318
tainly it would be unreasonable to require that police officers take unnecessary risks in the performance of their duties.” (Internal quotation marks omitted.)
State
v. Gant, supra,
Our conclusion is not inconsistent with the longstanding rule that “the police must, whenever practica
*320
ble, obtain advance judicial approval of searches and seizures through the warrant procedure.” Id., 20. Nor does our holding signal a retreat from the fourth amendment’s general proscription against the warrantless entry into a home to search for evidence or to secure an arrest unless the entry is supported by either a warrant or by both probable cause and the existence of exigent circumstances. Moreover, we authorize no more than what is reasonably necessary to protect investigating officers from possible harm. “Because a patdown search is intended to secure the safety of the investigating officer, it is strictly limited to a search for weapons. The officer cannot conduct a general exploratory search for whatever evidence of criminal activity [the officer] might find. . . . Furthermore, a patdown search for weapons that is justified at its inception becomes constitutionally infirm if the search thereafter becomes more intrusive than necessary to protect the safety of the investigating officer.” (Citations omitted; internal quotation marks omitted.)
State
v.
Trine,
*322 II
We turn next to the issue of whether the patdown search of the defendant was supported by a reasonable and articulable suspicion that the defendant was armed and dangerous. 19 We conclude that it was. 20
“Our standard of review of a trial court’s findings and conclusions in connection with a motion to suppress is
*323
well defined. A finding of fact will not be disturbed unless it is clearly erroneous in view of the evidence and pleadings in the whole record .... [When] the legal conclusions of the court are challenged, we must determine whether they are legally and logically correct and whether they find support in the facts set out in the memorandum of decision . . . .” (Internal quotation marks omitted.)
State
v.
Santos,
“Any inquiry into the permissible justification for, and boundaries of, a particular investigatory detention and patdown search is necessarily factbound.”
State
v.
Trine,
supra,
The trial court found that the officers were aware of the following relevant facts before knocking on the defendant’s door: (1) 130 Sylvan Avenue is located in an area known for substantial criminal activity; (2) that address had been the subject of prior criminal investigations; (3) individuals were engaged in suspicious activity directly behind the apartment building approximately one and one-half hours before the officers knocked on the door to the apartment; (4) Jones *324 reported that a drug delivery had been received by an unidentified black male at that apartment several hours earlier; (5) Jones further reported that drugs were being packaged at the apartment; and (6) voices could be heard coming from inside the apartment. On the basis of these facts, the trial court concluded, and we agree, that the officers had a generalized but reasonable suspicion that criminal activity was ongoing in the apartment when they approached it.
Upon reaching the apartment, Rubino knocked on the door two or three times. The defendant responded by opening the door one and one-half feet to two feet wide. Upon observing the uniformed officers, the defendant attempted to close the door with his left hand while thrusting his right hand into his pocket. The trial court concluded that the defendant’s conduct, coupled with the other information that the police had about the apartment, gave rise to a reasonable suspicion that the defendant was armed and posed a danger to the investigating officers. We also agree with this conclusion of the trial court.
“[N]ervous, evasive behavior is a pertinent factor in determining reasonable suspicion.”
Illinois
v.
Wardlow,
Furthermore, “Connecticut courts repeatedly have noted that ‘[t]here is a well established correlation between drug dealing and firearms.’
State
v.
Cooper,
Moreover, a suspect’s attempt to reach into his pocket or some other place where a weapon may be
*326
concealed is a fact that supports a reasonable suspicion that the suspect is armed and dangerous. See, e.g.,
United States
v.
Robinson,
The defendant maintains that, because the information Jones provided to the officers was uncorroborated, the officers reasonably could not have credited it. We reject this contention. Jones was not an anonymous informant; rather, she conveyed the information to the police in person. In contrast to a person who provides information to the police anonymously, the police were able to assess Jones’ demeanor and credibility, and she could be held accountable if her information ultimately proved to be false.
21
See, e.g.,
United States
v.
Valentine,
The defendant further contends that the patdown search cannot be justified under the fourth amendment because he was attempting to shut the door to the apartment when the officers entered. According to the defendant, nothing “in the facts of this case or in common experience suggests] that a resident attempting to close a door ... is likely to shoot
through
a door.” (Emphasis in original.) We reject this argument. If the defendant had been armed, he easily could have shot through the wooden door or, alternatively, reopened the door and fired upon the officers as they retreated. Furthermore, as the trial court noted, Rubino had only a “split second” to react to the defendant while standing no more than between one and two feet from him. In such circumstances, Rubino was not required to calculate the probability that the defendant would proceed in a certain way before taking reasonable steps to protect himself and his fellow officers. See, e.g.,
United States
v.
Sharpe,
The judgment of the Appellate Court is reversed and the case is remanded to that court with direction to affirm the judgment of the trial court.
In this opinion the other justices concurred.
Notes
The fourth amendment to the United States constitution provides: “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.”
The fourth amendment right to be free from unreasonable searches and seizures is made applicable to the states by incorporation through the due process clause of the fourteenth amendment. See
Mapp
v.
Ohio,
The defendant also claimed that his rights under article first, § 7, of the Connecticut constitution were violated. Because the defendant had failed to provide an independent analysis of his state constitutional claim, however, the Appellate Court did not address it.
State
v.
Mann,
Jones also told the police that she resided in an apartment located at 73 Stevens Street.
Terry
v.
Ohio,
Forpurposes of this appeal, we treat the apartment at 130 Sylvan Avenue, where the search took place, as the defendant’s home. The defendant testified at the suppression hearing that he had been staying at the apartment, which was leased to a friend, and paying rent for three to four weeks. The trial court determined that the defendant had a legitimate expectation of privacy in the apartment, and that finding has not been challenged on appeal.
The trial court further found that, in light of “the possibility of gunfire in a common hallway,” the other occupants of the apartment, along with the police, also would have been endangered if the defendant had been armed.
The court also credited evidence adduced by the state that: (1) 130 Sylvan Avenue is located in an area known for its substantial criminal activity; (2) that address had been the subject of prior criminal investigations; (3) approximately one hour before the investigating officers responded to the reported dispute on Stevens Street, Rubino saw a group of people *306 gathered behind 130 Sylvan Avenue, most of whom had scattered at the sight of Rubino’s marked police cruiser, and that such activity is consistent with street level narcotics trafficking; and (4) the police had determined that the layout of the apartment complex at 130 Sylvan Avenue was as Jones had described it.
The trial court also determined that, although the facts known to the police officers at the time of entry supported a reasonable and articulable suspicion that the defendant was armed and dangerous and “about to commit a [gun-related] crime,” that suspicion did not rise to the level of probable cause. “Reasonable suspicion is a less demanding standard than probable cause not only in the sense that reasonable suspicion can be established with information that is different in quantity or content than that required to establish probable cause, but also in the sense that reasonable suspicion can arise from information that is less reliable to show probable cause.” (Internal quotation marks omitted.)
State
v.
Groomes,
The defendant also claims that his rights under article first, § 7, of the Connecticut constitution were violated. As we have indicated; see footnote 2 of this opinion; the defendant raised a similar claim in the Appellate Court but that court declined to review the claim because he had failed to provide an independent analysis under the comparable state constitutional provision.
State
v. Mann, supra,
We acknowledge that it was approximately 5 a.m. when Rubino knocked on the door to the apartment. In general, the fact that such an encounter between the police and the occupant of a residence occurs at night or in the early morning hours is relevant to a determination of whether the encounter was consensual. See, e.g.,
United States
v.
Jerez,
supra,
A “protective sweep” is a “cursory inspection of those spaces where a person may be found.”
Maryland
v.
Buie,
supra,
The court reasoned that such a protective sweep was justified under the search incident to arrest doctrine pursuant to which police officers may search the area within the immediate control of the arrestee contemporaneously with the arrest in order to prevent the arrestee from gaining access to weapons and to prevent the concealment or destruction of evidence.
Maryland
v.
Buie,
supra,
Although, in
Buie,
the initial entry into the suspect’s home and the search for and arrest of the suspect was authorized under an arrest warrant,
*315
the subsequent protective sweep of the suspect’s home was not. See
Maryland
v.
Buie,
supra,
In
Santana,
police officers learned that the defendant possessed marked money that had been used in an arranged, undercover drug transaction.
United States
v.
Santana,
supra,
The court concluded that the defendant did not have any expectation of privacy in the doorway of her house under the circumstances as she not only was visible to the public “but was as exposed to public view, speech, hearing, and touch as if she had been standing completely outside her house.” Id., 42. The court stated that, “[w]hile it may be true that under the common law of property the threshold of one’s dwelling is private ... it is nonetheless clear that under the cases interpreting the Fourth Amendment [the defendant] was in a public place. She was not in an area where she had any expectation of privacy. What a person knowingly exposes to the public, even in his own house or office, is not a subject of Fourth Amendment protection.” (Internal quotation marks omitted.) Id.
As the Second Circuit Court of Appeals has recognized;
United States
v.
Gori,
supra,
In support of Ms contention that the patdown search violated Ms rights under the fourth amendment, the defendant relies on several cases holding that
Terry
did not justify the search or seizure that had occurred inside the home. See, e.g.,
LaLonde
v.
Riverside,
It is true that, in
Terry,
the United States Supreme Court considered the constitutionality of a patdown search, undertaken on the street, of a person who the police reasonably suspected was committing or was about to commit a crime. See
Terry
v.
Ohio,
supra,
The Appellate Court rejected the state’s contention that the patdown search of the defendant was justified under the principles articulated in
Terry
and
Santana
primarily because of its conclusion that
Payton,
and not
Santana,
is the constitutional precedent applicable to the issue raised by the search at issue in the present case.
State
v.
Mann,
supra,
With respect to the Appellate Court’s reading of Santana, we reject that interpretation as too narrow. In concluding Haai Santana has no applicability to the present case, the Appellate Court construed Santana as “focus [ing] on the defendant’s reasonable expectation of privacy in light of his conduct after opening the door in response to a knock by the police. [The Appellate Court] therefore focus[ed] [its] inquiry on the defendant’s reasonable expectation of privacy in light of his conduct after opening tire door in response to the knock by the police.” Id., 60. In reaching that conclusion, the Appellate Court noted that, “[following Santana and Payton . . . courts have struggled with cases in which the police have made warrantless, probable cause arrests at the doorway of a defendant’s home following the opening of the door by the defendant in response to a knock on the door by the police. The focus of the inquiry in these cases has been whether the principles of Santana or Payton apply—whether the arrest was in a public place in which the defendant had no reasonable expectation of privacy, or whether the arrest was made in the home, a place in which the defendant ha[s] the highest expectation of privacy.” (Internal quotation marks omitted.) Id., 59. The Appellate Court thereupon adopted the view of several courts that, “if a defendant opens the door in response to a police knock and acquiesces in the ensuing arrest, the arrest is valid under Santana, but that a defendant, by merely opening the door in response to a knock by the police, does not, without more, surrender a reasonable expectation of privacy in the home under Payton.” (Internal quotation marks omitted.) Id., 59-60. Upon application of that principle, the Appellate Court concluded that the defendant’s conduct after Rubino’s knock on the door demonstrated that he had not abandoned his privacy interest in the apartment merely by opening the door for police. Id., 60. On the basis of this determination, the Appellate Court further concluded that Payton, and not Santana, applies to the present case. Id., 62, 67.
We note that this court has reserved the question of whether
Santana
applies when the police enter a suspect’s home to arrest him after the suspect has opened his door in response to a knock by the police but thereafter manifests an intent not to relinquish his privacy interest in his home. See
State
v.
Santiago,
supra,
The Appellate Court did not address this issue in light of its conclusion that the patdown search was not justified under the fourth amendment because it was not predicated on probable cause. See generally
State
v.
Mann,
supra,
On appeal to the Appellate Court, the defendant claimed that, even if the officers were justified in patting him down for weapons, they were not justified in removing the crack cocaine and marijuana from his pocket.
State
v.
Mann,
supra,
An anonymous tip generally does not satisfy the requirement of reasonable suspicion unless the tip is suitably corroborated or otherwise exhibits sufficient indicia of reliability. See, e.g.,
State
v.
Hammond,
We previously noted that Jones had told the officers that she resided at an apartment located at 73 Stevens Street. See footnote 3 of this opinion. Although the court declined to make a finding, on the basis of the evidence, that such an address actually existed, there is nothing in the record to suggest that the officers doubted, at the time of the search, either the existence of the address or Jones’ veracity regarding the fact that she resided there. “The reasonableness of official suspicion must be measured by what the officers knew before they conducted their search.”
Florida
v.
J. L.,
