Following a bench trial, T.L.L., a juvenile,1 was found guilty of armed robbery. On appeal, he contends that the trial judge erred by denying T.L.L.’s motion to suppress identification evidence. More particularly, T.L.L. claims that the police lacked reasonable articulable suspicion to detain him for purposes of a show-up identifica*337tion by the complaining witness. In light of the limited evidence presented by the District at the hearing on T.L.L.’s motion, we are compelled to reverse.
I.
THE EVIDENCE
At the motions hearing, which was held on February 2,1996, the only witnesses for the District were the complainant, John Hatcher, and one of the arresting officers, Elizabeth Sharp-Hamlet. The District did not call Officer Gregory Phifer, who played the lead role in investigating the case, and who had testified extensively at the probable cause hearing, which was held on the day of T.L.L.’s arrest.2
Mr. Hatcher testified that at approximately 1 a.m. on April 5, 1995, he was robbed at gunpoint in the 500 block of 48th Street N.E. in Washington, D.C. Hatcher stated that a small station wagon occupied by four young men passed him and came to a halt. Two of the occupants got out of the car and rushed at him. One of the robbers was armed with a handgun and pointed it at Hatcher. The other robber— allegedly T.L.L. — went through Hatcher’s pockets. Finding no money or valuables, the robbers took Hatcher’s sweatshirt. The men then fled, and the gunman fired his weapon as they did so.
Shortly after the robbery, Hatcher flagged down a police car and reported the robbery to Officer Phifer. Hatcher gave Phifer a general description of his assailants. At the motions hearing on February 5, 1995, ten months after the robbery, Hatcher recalled the description as follows:
I told him the one with the gun, I told him he was light complexion, kind of slim, maybe about 5’10” or something. But he had the bandanna or some kind of cloth covering his face, the only thing I knew is he was light complexion.... And I couldn’t give him a real good description maybe of the clothes, maybe dark clothing.... [T]he second guy ... he was maybe about four foot something. I don’t know if I told him 4’10” or 4’11” ... just so young looking, maybe about 15, 16, and just clear cut face. He just looked so young.
Mr. Hatcher described the assailants’ car as
a smaller version of a station wagon, but maybe a blue or green, some dark color ... it had ... more or less a luggage rack or something on top of it ... older model.
Some undisclosed period of time after Hatcher provided these descriptions, officers drove Hatcher to a location near 44th Street and showed him a station wagon “that seemed like the vehicle the guy was in.” Hatcher was then transported to 4427 Hayes Street for a “show-up,” and police officers brought out four or five individuals, one at a time, to determine whether Hatcher could identify any of them. Hatcher positively identified the first suspect — T.L.L.—as the robber who had gone through his pockets. Hatcher was unable to identify any of the other men.
Officer Sharp-Hamlet testified that between 1 a.m. and 2 a.m. on April 5, 1995, she monitored a broadcast lookout for suspects in a robbery. According to Officer Sharp-Hamlet, the lookout was for three or four black males. One of the robbers was described as “approximately 14 to 18 years of age, medium complexion, dark-colored clothing.” A second suspect was described as “another black male in his early teens to late teens, with dark brown complexion, wearing dark-colored clothing.” The descriptions included no information regarding height, weight, presence *338or absence of facial hair, or any other distinctive characteristic. Officer Sharp-Hamlet testified that “a location was given [in the broadcast] as to the whereabouts of possible suspects.” The specified location was 4427 Hayes Street N.E.
Upon receiving this information, Officer Sharp-Hamlet proceeded to the Hayes Street address. She testified that four or five3 young men were standing on the stoop, some of whom matched the “general description” in the broadcast lookout.4 When Officer Sharp-Hamlet and several other officers got out of their police cars, the young men all ran inside the building. The officers apprehended most of the suspects and exhibited them, one at a time, to the complaining witness.
The District made no attempt to explain the significant differences between Hatch-er’s description of the suspects and the lookout monitored by Officer Sharp-Hamlet. There was no testimony that T.L.L. individually matched even the very general description reported by Officer Sharp-Hamlet. Indeed, at the motions hearing, Officer Sharp-Hamlet did not remember T.L.L. at all, and she could not identify him in court. Moreover, there is no information in the record as to why the lookout directed officers to the address on Hayes Street at which T.L.L. was apprehended (and at which, as it turned out, he also lived).
II.
THE TRIAL JUDGE’S DECISION
The trial judge denied the motion to suppress identification. He ruled, in pertinent part, as follows:
It seems to me that ... Officer [Sharp-Hamlet], when she focused her attention on the Respondent and the other young men with him, when she kind of zeroed in on them, had before her information that was sufficiently particularized for her to take the measures and the steps that she did.
I think that she was justified in so doing because she recognized that the young men or older boys — however you want to style it — that she saw were close both in place and time to the offense which *339happened early in the morning, about 1:00 in the morning.
But she did have a description of at least two people involved in the robbery, and she had a description by race, by age, by sex, by complexion, and by location within time and place, as I say. She also knew that there were two people, at the very least, involved.
And when she saw these young men in front of the apartment building, she suspected that they may have been the people involved because, at the very least, one, and probably two, met the description given by these factors here.
The judge also noted that the vehicle identified by the complainant was located near the apartment building at which T.L.L. was apprehended. He did not consider this information, however, because the District had not established that, at the time that T.L.L. was detained, the police were aware that a vehicle was involved in the robbery. The judge described T.L.L.’s quick entry into the building as an “ambiguous” gesture, but he concluded that this conduct was incriminating at least to a modest degree.
After the motion to suppress identification was denied, the parties proceeded to trial. The judge credited Hatcher’s identification of T.L.L. as extremely reliable and found T.L.L. guilty as charged. This appeal followed.
III.
LEGAL ANALYSIS
A. The legal standard.
It is undisputed that the detention of T.L.L. by the police in order to present him to the complainant for identification at the show-up constituted a seizure within the meaning of the Fourth Amendment’s proscription against unreasonable seizures. See, e.g., Womack v. United States, 673 A.2d 608, 608-09 (D.C.1996), cert. denied, 519 U.S. 1156, 117 S.Ct. 1097, 137 L.Ed.2d 229 (1997); In re M.E.B., 638 A.2d 1123, 1126-27 (D.C.1993), cert. denied, 513 U.S. 883, 115 S.Ct. 221, 130 L.Ed.2d 148 (1994). The legality of the seizure turns on whether, in light of all of the circumstances, the officers had the requisite reasonable articulable suspicion to make an investigatory stop. See generally Terry v. Ohio, 392 U.S. 1, 88 S.Ct. 1868, 20 L.Ed.2d 889 (1968). In this appeal, T.L.L. challenges the trial judge’s disposition of that issue in the District’s favor.
In reviewing the denial of T.L.L.’s motion to suppress evidence, we will not disturb the trial judge’s findings of fact unless they lack evidentiary support in the record. D.C.Code § 17-305(a) (1997); see also United States v. Turner, 699 A.2d 1125, 1127 (D.C.1997). The evidence, and all reasonable inferences from the evidence, must be viewed in the light most favorable to the District, as the party that prevailed below. See, e.g., Peay v. United States; 597 A.2d 1318, 1320 (D.C.1991) (en banc); Ruffin v. United States, 642 A.2d 1288, 1291 (D.C.1994). Whether, in light of the judge’s evidentiary findings, the police “had the requisite particularity for a reasonable articulable suspicion to stop [T.L.L.] ... is a question of law we decide de novo.” Turner, supra, 699 A.2d at 1127; see also Ornelas v. United States, 517 U.S. 690, 699, 116 S.Ct. 1657, 134 L.Ed.2d 911 (1996).
Where, as here, the existence of a reasonable articulable suspicion is at issue, the District’s burden is not an onerous one. See, e.g., Gomez v. United States, 597 A.2d 884, 888-89 (D.C.1991). “Although the term eludes precise definition, articulable suspicion is substantially less than probable cause and considerably less than proof of wrongdoing by a preponderance of the evidence.” Turner, supra, 699 A.2d at 1128 (citations, brackets, and ellipsis omitted). Nevertheless, in justifying the particular intrusion, “the police officer must be able to point to specific and articulable *340facts which, taken together with rational inferences from those facts, reasonably warrant the intrusion.” Curtis v. United States, 349 A.2d 469, 471 (D.C.1975) (quoting Terry, swpra, 892 U.S. at 21, 88 S.Ct. 1868).
B. Particularity.
In order to pass muster under Terry and its progeny, the articulable suspicion must be “particularized as to the individual stopped.” In re A.S., 614 A.2d 534, 537 (D.C.1992) (citations omitted). A police officer’s “inchoate and unparticularized suspicion or hunch” is not sufficient. Turner, supra, 699 A.2d at 1128 (emphasis in original; citation omitted). The “demand for specificity in the information upon which police action is predicated is the central teaching of this court’s Fourth Amendment jurisprudence.” United States v. Cortez, 449 U.S. 411, 418, 101 S.Ct. 690, 66 L.Ed.2d 621 (1981) (citations omitted); see also Turner, supra, 699 A.2d at 1128.
At least in the absence of other circumstances that provide sufficient particularity, “a description applicable to large numbers of people will not suffice to justify the seizure of an individual.” Turner, supra, 699 A.2d at 1128-29 (citation omitted). A leading commentator on Fourth Amendment jurisprudence has written:
Quite obviously, the more the description provided ... can be said to be particularized, in the sense that it could apply to only a few persons in the relevant universe, the better the chance of having at least sufficient grounds to make a stop.
4 Wayne R. LaFave, Search and Seizure § 9.4(g), at 198 (3d ed.1996) (quoted in Turner, supra, 699 A.2d at 1129 n. 3).
So far as the record of the suppression motion hearing shows, the information on which the police acted in detaining T.L.L. was altogether lacking in particularity. According to Officer Sharp-Hamlet, the only witness who testified with regard to the broadcast lookout, the two robbers were described simply as black teenagers wearing dark clothing; one of them was said to have a “dark” complexion, the other a “medium complexion.”5 Without identifying information with respect to height, weight, facial hair or other distinguishing features, this description could have fit many if not most young black men. Moreover, even these very general descriptions in the lookout were at odds with the information provided by Hatcher (as Hatcher recalled it at the motions hearing), and there was no evidence at all that T.L.L. personally matched the lookout.
In this case, the officers detained at least five, and perhaps as many as ten, young men — “corralled” was the verb aptly selected by the trial judge — even though only two very general descriptions had been received by the arresting officers. This, too, is a circumstance militating against affirmance. See In re A.S., supra, 614 A.2d at 540 (“dragnet seizure of three youths who resembled a generalized description cannot be squared with the longstanding requirement for particularized, individualized suspicion”); Turner, supra, 699 A.2d at 1130 (same).
The generality of the descriptions of the robbers might not have been fatal if the accused had been apprehended immediately after the robbery at the location *341where the crime occurred. For purposes of determining whether the police suspicion is sufficiently particularized, the relevant universe “will be determined primarily by the size of the area within which the offender might now be found (as indicated primarily by the amount of time which has passed since the offense) and the number of people about in that area.” Id. at 1129 n. 8 (quoting 4 LaFave, supra, § 9.4(g) at 198 n. 297). “[S]ometimes the universe will be small énough that no description at all will be required to justify a stopping for investigation.” 4 LaFave, supra, at 198 n. 298. Here, however, the District has made no showing of immediacy, either temporal or spatial. The trial judge found that T.L.L. was stopped by the police “many minutes” after the offense. Although the judge did not define “many,” the record shows that a substantial time elapsed.6
C. The Hayes Street address.
Officer Sharp-Hamlet testified that she proceeded to 4427 Hayes Street because that address was identified in the lookout as the place where the suspects might be found. Obviously, the police had received some information which led them to the apartment house at which T.L.L. lived and at which he was identified and arrested. If the nature of the information on which the police relied had been disclosed to the court at the hearing on T.L.L.’s motion to suppress, this might well have satisfied the District’s modest burden in a case of this kind, for “exact location for the arrest team adds a very strong element to the totality of the circumstances.” Hill v. United States, 627 A.2d 975, 979 (D.C.1993). But the fact that the officers had information leading them to 4427 Hayes Street can contribute to the articulable suspicion calculus only if the judge has been apprised of sufficient facts to enable him to evaluate the nature and reliability of that information. See, e.g., Whiteley v. Warden, 401 U.S. 560, 564-68, 91 S.Ct. 1031, 28 L.Ed.2d 306 (1971); United States v. Hensley, 469 U.S. 221, 231, 105 S.Ct. 675, 83 L.Ed.2d 604 (1985); United States v. Cutchin, 294 U.S.App. D.C. 95, 96-97, 956 F.2d 1216, 1217-18 (1992); United States v. Robinson, 536 F.2d 1298, 1299-1300 (9th Cir. 1976); but cf. id. at 1300-02 (Smith, J., dissenting); Commonwealth v. Queen, 536 Pa. 315, 639 A.2d 443, 446 (1994). Here, no such evidence was adduced.
D. “Flight.”
The District also relies on T.L.L.’s rapid retreat into the apartment house upon the approach of the police as a factor supporting the trial judge’s finding of articulable suspicion. The judge characterized this apparently evasive conduct as “an ambiguous gesture” or an “equivocal sort of thing to do,” but he nevertheless concluded that it “had an extra weight that was incriminating, you might say, it was not exonerating.” We agree with the judge that T.L.L.’s actions at the scene *342were relevant, see, e.g., Lawrence v. United States, 509 A.2d 614, 616 (D.C.1986) (citations omitted), but we do not believe that this evidence added enough to the District’s otherwise flimsy case to put the District over the top. See, e.g., Smith v. United States, 558 A.2d 312, 319 (D.C. 1989) (en banc):
For flight to suggest consciousness of guilt — a mentality other than a legitimate desire to avoid the police — that flight not only must be very clearly in response to a show of authority but also must be carried out at such a rate of speed, ..., or in such an erratic or evasive manner, that a guilty conscience is the most reasonable explanation.
See also Alberty v. United States, 162 U.S. 499, 511, 16 S.Ct. 864, 40 L.Ed. 1051 (1896), recognizing that “men who are entirely innocent do sometimes fly from the scene of a crime7 through fear of being apprehended as the guilty parties, or from an unwillingness to appear as witnesses.”
In the present case, the entire group of young men — at least five, and perhaps as many as ten to fifteen, according to Officer Phifer’s almost contemporaneous recollection — ran into the apartment house when the officers got out of their car. The approach of the police thus led the innocent as well as the possibly guilty to try to make themselves scarce. Moreover, T.L.L. was a resident of the apartment house, although it is unclear whether the officers knew that he lived there. Even taking T.L.L.’s “flight” into consideration, we conclude that the District failed to make a sufficient showing of articulable suspicion.8
E. The evidence not presented.
At the probable cause hearing, Officer Phifer testified, inter alia, that on the night of the robbery he initially monitored a radio run reporting a shooting in the 500 block of 48th Street. Upon arrival there, he and other officers interviewed the complaining witness (obviously Hatcher), as well as “one actual witness to the incident,” a neighbor who had called the police. Phifer stated that while Hatcher was describing the robbers, “that’s when I was getting a lot of the information of where these subjects could possibly be at.” An officer subsequently located a green Pinto which Hatcher promptly identified as the car utilized by the robbers.9
For reasons that are not apparent from the record, almost none of the foregoing information was produced ten months later at the hearing on T.L.L.’s motion to suppress. As a result, the District’s case boiled down to the claim that two of a group of about five (or ten) suspects detained about an hour after the robbery at a location four blocks from the scene of the crime matched a description which could *343have covered many or most young black males. Whatever the result might have been if Officer Phifer had been questioned about the course of his investigation and about the information provided to the police by the neighbor or by other individuals, we cannot sustain the seizure of T.L.L. on the basis of the evidence presented at the suppression hearing.10
In Kaiser v. State, 296 Ark. 125, 752 S.W.2d 271 (1988), officers in Randolph County, Arkansas received a tip from their counterparts in Missouri that the defendant’s car, which was identified by description and license number, would be travelling through the county, and that it contained a pistol and fifty pounds of marijuana or $25,000 in cash. The Arkansas officers stopped the car and recovered a pistol, drugs, and cash. In a forfeiture proceeding instituted against him in Arkansas, the defendant moved to suppress the evidence seized from him. The prosecution established that Arkansas officers had received a tip from police in Missouri, but offered no evidence as to the source of the Missouri officers’ information. Relying on the Supreme Court’s opinion in Hensley, supra, the Supreme Court of Arkansas held that the contraband had been unconstitutionally seized:
The [United States] Supreme Court’s opinion makes it clear that the failure of the issuing police agency to have reasonable suspicion to stop and search a vehicle cannot be immunized from a Fourth Amendment objection by passing the information on to another police officer or department which then acts upon it. In this case, the informant may well have been a reliable one, and the Missouri State Police may well have had a reasonable suspicion of Kaiser. We cannot know that, however, as the record is devoid of testimony supporting that conclusion.
Id. at 274.
In the present case, as in Kaiser, Officer Phifer may well have had a basis for dispatching officers to T.L.L.’s apartment house. The relevant facts, however, were not communicated to the court. Accordingly, we conclude that the motion to suppress Hatcher’s show-up identification of T.L.L. should have been granted.
F. Proceedings on remand.
The District contends that, even if the show-up identification should have been suppressed, this court should affirm the adjudication of guilt on the strength of Hatcher’s identification of T.L.L. in the courtroom. The District relies primarily on United States v. Crews, 445 U.S. 463, 100 S.Ct. 1244, 63 L.Ed.2d 537 (1980). We do not agree with the District’s position.
The trial judge’s error in admitting evidence of the show-up identification in violation of the Fourth Amendment was constitutional in nature. The courtroom identification was made ten months after the robbery, and we cannot conclude, without further findings by the trial judge, that the admission of the earlier identification, made less than an hour after the offense, was harmless beyond a reasonable doubt. See Chapman v. California, 386 U.S. 18, 24, 87 S.Ct. 824, 17 L.Ed.2d 705 (1967).
In Crews, the Supreme Court sustained the defendant’s conviction on the basis of a courtroom identification, notwithstanding the suppression of pretrial identifications, because the trial judge expressly found that the courtroom identification rested on the victim’s independent recollection of the initial encounter and was not a fruit of the earlier, constitutionally flawed identifications. 445 U.S. at 472-73, 100 S.Ct. 1244. No such finding *344has been made in this case, and we leave to the trial judge on remand, at least in the first instance, the question whether the circumstances here are analogous to those in Crews.
IV.
CONCLUSION
For the foregoing reasons, the decision of the trial court is reversed, and the case is remanded for further proceedings consistent with this opinion.
So ordered.
. At the time of the offense, T.L.L. was thirteen years old.
. Officer Phifer was called as a defense witness at the February 2, 1996 hearing, but testified only briefly. He was not asked by either counsel to describe in any detail the course of his investigation. Phifer did, however, acknowledge certain testimony that he had given at the probable cause hearing, which was held on the day of the robbery. See note 3, infra.
. At the suppression hearing, Officer Phifer testified consistently with Officer Shaip-Ham-let's testimony regarding the number of young men apprehended. He was then asked, however, whether he had stated at the probable cause hearing that the police had pursued ten to fifteen individuals who had run into the building from the street, and that the officers had apprehended and detained approximately ten of these men inside the building and exhibited them, one by one, to Mr. Hatcher for identification. Phifer acknowledged that he had given this testimony, and it became a part of the record. Cf. D.C.Code § 14-102(b) (1998 Supp.).
It is not entirely clear whether the running from the stoop described by Officer Sharp-Hamlet represented the same incident as the running from the street described by Officer Phifer. Both events, however, occurred shortly before the show-up.
Our dissenting colleague suggests that the trial judge "did not credit the initial version given by [Officer Phifer],” in which Phifer stated that the police pursued ten to fifteen individuals. The judge did not make any explicit credibility finding on the issue, but it is most unlikely that the judge would have disbelieved Phifer's recollection a few hours after the events Phifer described and would have accepted instead ten-month-old recollections. In any event, our disposition obviously does not turn on the point. See pp. 340, 341 and 342, infra.
Judge King also cites T.L.L.’s testimony at the trial to the effect that he was with three or four of his friends, and not ten of them, at the time the officers detained him. That testimony is not properly before us on this appeal, for in reviewing a decision declining to suppress evidence, this court, under the authority cited by Judge King, may consider "all testimony from the suppression hearing and undisputed testimony at the trial." Patton v. United States, 633 A.2d 800, 818 n. 11 (D.C. 1993) (per curiam) (emphasis added) (citing Martin v. United States, 567 A.2d 896, 902 n. 16 (D.C. 1989)). T.L.L.’s testimony on this issue is obviously disputed in the suppression motion record.
. Officer Sharp-Hamlet stated that she had driven by the building earlier on the evening in question. The young men were not standing on the stoop at that time.
. As we have noted at page 337, Hatcher indicated that the gunman had "maybe dark clothing,” but he said nothing about the color of the clothes worn by the young man who went through Hatcher’s pockets (allegedly T.L.L.). Hatcher also stated that the gunman had a light complexion, but did not describe the color of the other robber’s skin. The distinctive facts related by Hatcher about the individual who searched him — his short stature and extremely youthful appearance — were not included in the lookout as described by Officer Sharp-Hamlet. The fact that the judge could observe T.L.L. ten months later and confirm that he looked young, see dissenting opinion, post at 345, is irrelevant to the question whether the officers had articula-ble suspicion to detain T.L.L.
. Officer Sharp-Hamlet was extremely vague with respect to the times at which various events occurred. Officer Phifer testified that the robbery took place at about 1:00 a.m., and that T.L.L. was detained three to five minutes before his formal arrest. According to a representation by T.L.L.’s attorney which counsel for the District did not rebut, police documents gave the time of arrest as 2:00 a.m. This suggests that approximately fifty-five minutes elapsed between the robbery and the arrest. Even if the time separating the two events was shorter than that, cf. Judge King’s opinion, post at 345 (relying on T.L.L.’s trial testimony), it was far too long to support any inference that the robbers (who had run to their vehicle after committing the offense) would probably still be at or near the scene of the crime. Cf. Cauthen v. United States, 592 A.2d 1021, 1023 (D.C.1991) (passage of fifteen minutes from time of offense to police response was "considerably longer than the delay involved in our past decisions on point”); Turner, supra, 699 A.2d at 1127 (sustaining Terry stop where officer arrived "within a minute” of the incident).
Moreover, T.L.L. was apprehended at 4427 Hayes Street, N.E., several blocks from the location of the robbery in the 500 block of 48th Street. There was testimony that these events took place in a residential area, albeit during the night-time hours on a cold night.
. In this case, the alleged “flight” was from a location some distance from the robbery. The evasive action by the group of young men at 4427 Hayes Street was thus more consistent with a general disposition to avoid contact with police officers, see Smith, supra, 558 A.2d at 319, than a suspect's flight from the scene of the crime would have been.
. Wilkerson v. United States, 427 A.2d 923 (D.C.), cert. denied, 454 U.S. 852, 102 S.Ct. 295, 70 L.Ed.2d 143 (1981), on which our dissenting colleague relies, is distinguishable in critical respects from the present case. In Wilkerson, the police located the defendant, within half an hour of the call for help, only one block from the scene of the rape. Id. at 926. There was testimony that the streets were empty and that the defendant was the only person out on the street. Id. Moreover, it appears that the police did not initially detain the defendant, but merely stopped their cruiser in his path and inquired if he knew anything about the rape. Id. at 924. It was only after the defendant gave somewhat dubious responses to the officer’s questions that he was asked to accompany the officer to the scene of the crime. Id. Although this court described the encounter as a "detention,” id. at 925, it appears that it became a detention only when the defendant was removed to the crime scene.
.Later, a handgun was recovered from the Pinto, and Hatcher gave officers a "positive ID on the weapon.” It appears, however, that these events occurred after T.L.L.’s seizure by the police. .
. Although, as we have noted, the officers located a car which Mr. Hatcher identified as the one in which the robbers had been riding, the trial judge discounted this information because the District did not prove that the officers were aware of it at the time T.L.L. was detained. We agree with the judge's assessment of the record in this regard.