Justice MARTINEZ delivered the Opinion of the Court.

The People appeal a suppression order entered by the Pueblo County District Court in the prosecution of Joseph Jason Salazar. The trial court found that the police officer who detained Salazar lacked a reasonable suspicion to justify the stop. Therefore, the trial court suppressed evidence seized and statements made by Salazar subsequent to the stop. We affirm the trial court's order and remand the case for further proceedings.

I.

On August 20, 1997, Officer Phil Casias was on duty in the area of Aloha Glorya's, a bar in Pueblo, Colorado. At approximately 11:45 p.m., Casias was dispatched to Aloha Glorya's in response to a call for service. That call resulted from an anonymous telephone call to police dispatch reporting that an individual was selling cocaine at the bar. The anonymous caller described the individual as a hispanic male, age 19 to 21, wearing a black shirt, blue jeans, and a baseball cap with the letter "C" on it. The caller stated that the individual stored the cocaine in his right shoe. The caller did not provide the basis for this information.

All of the above information, except the suspect's age, was relayed to Casias by police dispatch. Upon entering the bar, Casias observed an individual who matched the description provided by the caller. The individual was sitting at a table against the back wall of the establishment. Casias approached the individual, who later identified himself as Salazar, and asked him to go outside. Salazar said nothing, but stood up and started walking toward the exit. As they were exiting the bar, an employee of the bar, as well as a patron who was identified as an off-duty Department of Corrections officer, informed Casias that Salazar had not been creating a disturbance in the bar.

Once outside, Casias and Salazar were joined by another officer. At that point, Casias informed Salazar that Salazar matched the description of someone who was allegedly selling cocaine from the bar. Casias then asked permission to conduct a search of Salazar's person, and Salazar purportedly consented to the search. A search of Salazar's right shoe revealed a plastic baggie with several folds of an unknown substance. Salazar identified the substance as chalk. The search of the shoe also produced a hand-held scale.

Because he suspected the substance within the baggie to be cocaine, Casias arrested Salazar for possession of a schedule II controlled substance. After a chemical test showed that the substance was not cocaine, Salazar was charged with possession with intent to distribute an imitation controlled substance, a class five felony. See § 18-18-422, 6 C.R.S. (1997).

After Salazar was bound over for trial, he filed a Motion to Suppress Evidence and Statements. In his motion, Salazar argued, inter alia, that the police lacked both reasonable suspicion to stop him and probable cause to arrest him. At a hearing on the motion on March 3, 1998, the trial court heard arguments on the issues of reasonable suspicion, probable cause, and whether Salazar's consent to a search of his person was voluntary. Although the evidence suggested that Salazar was intoxicated at the time of the search, the trial court found that Salazar's consent to the search was given knowingly, voluntarily and intelligently.

On the issue of reasonable suspicion, the trial court made the following findings regarding the information known to Casias at the time of the stop: (1) an anonymous tipster described a person who the tipster claimed was dealing cocaine, (2) the tipster did not indicate how he knew that the person was dealing cocaine, and (3) a person who matched the description given by the tipster was present in the bar. The trial court concluded that this information was an insufficient basis for suspecting that criminal activity had taken place, was in progress, or was about to occur. Therefore, the trial court found that the stop of the defendant was improper, and suppressed the evidence seized and statements made by Salazar as a result of the stop.

The prosecution filed a Motion to Reconsider, arguing that the trial court's ruling was based on the erroneous theory that an officer must observe criminal activity in order to justify an investigatory stop. The prosecution maintained that the information known to Officer Casias at the time of the stop, although indicative of innocent behavior, was sufficient to provide a reasonable suspicion of criminal activity. The trial court denied the prosecution's motion, emphasizing that "[n]ot only was there no corroboration of any possible criminal activity, but there was absolutely no evidence of the anonymous informant's basis of knowledge or his reliability."

Pursuant to C.A.R. 4.1, the prosecution appeals the trial court's order. The prosecution argues once again that Casias's stop of Salazar was justified by a reasonable suspicion of criminal activity.

II.

The Fourth Amendment to the United States Constitution and Article II, Section 7 of the Colorado Constitution protect against unreasonable searches and seizures. See Minnesota v. Dickerson, 508 U.S. 366, 372, 113 S.Ct. 2130, 124 L.Ed.2d 334 (1993); People v. Canton, 951 P.2d 907, 909 (Colo. 1998). A warrantless search and seizure is unreasonable unless justified by an established exception to the Warrant Clause of the Fourth Amendment. See Canton, 951 P.2d at 909; People v. H.J., 931 P.2d 1177, 1180 (Colo. 1997). Moreover, an arrest must be based on probable cause to believe that the person arrested has committed a crime. See People v. Tate, 657 P.2d 955, 958 (Colo. 1983). "However, under narrowly defined circumstances, a police officer may temporarily stop a person for investigatory purposes without probable cause to support a search warrant or probable cause to arrest the person." Canton, 951 P.2d at 909.

An investigatory stop complies with the Fourth Amendment if three criteria exist. First, there must be an articulable and specific basis in fact for suspecting (i.e., a reasonable suspicion) that criminal activity has taken place, is in progress, or is about to occur. Second, the purpose of the intrusion must be reasonable. Third, the scope and character of the intrusion must be reasonably related to its purpose. See id.; People v. D.F., 933 P.2d 9, 12 (Colo. 1997). In this case, the prosecution appeals the trial court's conclusion that Officer Casias lacked a reasonable suspicion to justify the initial contact with Salazar. Therefore, in this appeal, we address only the existence of the first criterion for an investigatory stop.

Our inquiry focuses upon "`whether there were specific and articulable facts known to the officer, which taken together with reasonable inferences from these facts, created a reasonable suspicion of criminal activity to justify the intrusion into the defendant's personal security.'" People v. Garcia, 789 P.2d 190, 192 (Colo. 1990) (quoting People v. Thomas, 660 P.2d 1272, 1274 (Colo. 1983)). We look to the totality of the circumstances to answer this inquiry. See People v. D.F., 933 P.2d at 12.

In the instant case, the information known to Officer Casias at the time he stopped Salazar consisted entirely of information supplied by an anonymous tip and subsequent corroboration of certain details given by the tipster. Thus, the principles of our case law relating to anonymous information are relevant here. An anonymous tip, by itself, lacks sufficient indicia of reliability to establish reasonable suspicion. See id.; Garcia, 789 P.2d at 192. Therefore, information supplied by an anonymous source "may warrant an investigatory stop only if it is verified by sufficient independent corroborating evidence of criminal activity." People v. George, 914 P.2d 367, 370 (Colo. 1996).

Because the verification of seemingly innocent details contained in a tip may supply sufficient corroboration of the tip's reliability, a police officer need not observe criminal conduct to justify a limited investigatory intrusion. See People v. D.F., 933 P.2d at 16. For example, where the corroboration of details given by the tipster demonstrate the tipster's ability to predict a suspect's future behavior or knowledge of details not readily ascertainable by the general public, the tipster may be presumed to have a "special familiarity" with the suspect's affairs. See George, 914 P.2d at 371. Thus, if significant aspects of a tipster's predictions are verified, there may be reason to believe not only that the tipster is honest but also well-informed. See Alabama v. White, 496 U.S. 325, 332, 110 S.Ct. 2412, 110 L.Ed.2d 301 (1990).

In George, we provided the following summary of the law regarding an anonymous tip's relevance to reasonable suspicion:

[T]he information supplied by an anonymous tipster must be sufficiently corroborated to supply the degree of reliability precisely absent in many circumstances of anonymous reporting of asserted criminal conduct. Both the content and the reliability of information known to police — the quality and the quantity of such information — must be considered in examining the totality of the circumstances to determine whether there was an articulable and specific basis in fact to support a reasonable suspicion of criminal conduct.

914 P.2d at 371. Consequently, in George, we affirmed the trial court's suppression order on the grounds that the police lacked such a reasonable suspicion. There, an anonymous informant reported only that a van and another vehicle had entered a parking lot and that an altercation might possibly occur. We reasoned that the police's corroboration of the presence of the van merely corroborated a fact "presumably known or knowable by everyone." Id. As such, the corroboration lacked sufficient detail to establish the reliability of the informant's tip. See id.

Similarly, in Garcia, we also affirmed the trial court's suppression order. See 789 P.2d at 193. In that case, an anonymous caller alleged that a certain car contained cocaine under the hood. The police corroborated the caller's description and location of the car, and the caller's prediction that a person would enter the car at a specified time and drive away. Because the police corroborated only a "pattern of conduct intrinsically unsuspicious," and because the corroborated fact was merely "one instance of commonplace activity," we held that the tip was not sufficiently reliable to establish reasonable suspicion. Id. at 193 (emphasis added).

With these principles in mind, we turn to the question of whether the information known to Officer Casias was sufficient to establish reasonable suspicion. The information given by the anonymous call consisted of a physical description of a person, including details about the person's clothing, and an allegation that the person stored cocaine in his shoe for the purpose of dealing it. No aspect of the informant's tip indicated his basis for this information. The officer corroborated that a person matching the description given by the informant was present in the location specified by the informant. This was the sum total of the information known to the officer at the time he encountered Salazar.

We conclude that this information did not provide an articulable and specific basis in fact to support a reasonable suspicion of criminal conduct. First of all, the anonymous tip did not supply detailed knowledge or predictions of the person's future behavior that were corroborated by the officer's observations. See, e.g., White, 496 U.S. at 332, 110 S.Ct. 2412. Secondly, the only corroborated facts were the person's presence in the bar and his physical appearance. These facts were "presumably known or knowable by everyone," George, 914 P.2d at 371, and corroborated nothing more than "an instance of commonplace activity." Garcia, 789 P.2d at 193. Finally, the officer did not know of any suspicious circumstances surrounding this establishment, see, e.g., Canton, 951 P.2d at 910-11 (suspect observed at locale known for its drug activity), nor did the officer observe any suspicious conduct on the part of the person described by the informant. See, e.g., People v. D.F., 933 P.2d at 14 (suspect observed walking suspiciously stiff-legged as if concealing a weapon); People v. Savage, 698 P.2d 1330, 1335 (Colo. 1985) (officer investigating complaint of one threatening others with a knife at a gas station observed defendant at the gas station in an excited state with various people focusing their attention upon him).

As a consequence, the corroboration of the anonymous tip in this case lacked the quality and quantity of detail sufficient to establish the reliability of the informant's tip. Considering the totality of the circumstances, there was no articulable and specific basis in fact to believe that Salazar was involved in illegal activity. We hold, therefore, that the officer did not possess reasonable suspicion to justify the investigatory stop of Salazar.

III.

For the first time on appeal, the prosecution asserts that the initial contact between Casias and Salazar was a consensual encounter, thereby obviating the requirement of probable cause or reasonable suspicion. In response, Salazar contends that, because the prosecution failed to raise this issue with the trial court, the prosecution cannot raise the issue in this appeal. We agree with Salazar's contention.

Colorado case law, in accord with United States Supreme Court precedent, recognizes three categories of police-citizen encounters: (1) arrest, (2) investigatory stop, and (3) consensual interview. See People v. Johnson, 865 P.2d 836, 842 (Colo. 1994); People v. Trujillo, 773 P.2d 1086, 1089 (Colo. 1989). An arrest and an investigatory stop implicate the constitutional protections against unreasonable seizure, and must be justified by probable cause and reasonable suspicion, respectively. A consensual interview does not implicate these constitutional protections. See Johnson, 865 P.2d at 842.

It is axiomatic that issues not raised in or decided by a lower court will not be addressed for the first time on appeal. See, e.g., Colby v. Progressive Cas. Ins. Co., 928 P.2d 1298, 1301 (Colo. 1996); Boatright v. Derr, 919 P.2d 221, 227 (Colo. 1996). This axiom applies with equal force to interlocutory appeals. See, e.g., People v. Davis, 903 P.2d 1, 3 n. 5 (Colo. 1995) (declining to address argument that evidence was admissible as a search incident to arrest because prosecution did not make the argument before the trial court); People v. Bland, 884 P.2d 312, 322 (Colo. 1994) (declining to reach question because it was not addressed by trial court and, in any event, was inappropriate for review under C.A.R. 4.1).

The prosecution relies upon our decision in Johnson as support for the notion that we will address the prosecution's argument about a consensual stop even where the issue was not raised or addressed below. See 865 P.2d at 840. Johnson, however, does not stand for this proposition. In that case, the trial court found that the prosecution had conceded the fact that the police-citizen encounter was a seizure. See id. at 838. We disagreed with the trial court's view that the prosecution had conceded the seizure issue. The prosecution in Johnson had clearly and repeatedly asserted in the trial court that the encounter was a consensual interview. The record in Johnson reflected the following:

[I]n direct response to the [trial] court's inquiry as to whether the consent to a search overrides an illegal stop, the prosecutor told the court that he did not believe the encounter constituted a "stop or a seizure." Then, after the court summarily concluded that it was a stop, the prosecutor again explained his belief that this was the type of police-citizen encounter which did not implicate the Fourth Amendment. Simply because the court misconstrued the prosecutor's argument, and the prosecutor did not object to this misconstruction at every instance, on the record before us the People should not now be barred from raising the issue.

Id. at 840. Accordingly, because the seizure issue had been raised below, we proceeded to resolve the issue on appeal. See id. at 840-41.

In contrast to the scenario in Johnson, the prosecution in this case admits that it did not argue in the trial court that the encounter between Casias and Salazar was consensual. Rather, its entire argument centered upon the existence of reasonable suspicion to justify an investigatory stop. Hence, the prosecution's argument below was a concession that an investigatory stop, a seizure, had occurred. Because the issue of consensual encounter was not raised by the prosecution below, we decline to resolve the issue in this appeal. See generally Colby, 928 P.2d at 1300-01 (issues not addressed by trial court and which require factual determinations will not be addressed on appeal).

IV.

We hold that the record supports the trial court's conclusion that Officer Casias lacked adequate justification to make an investigatory stop of Salazar. Accordingly, we affirm the trial court's suppression order and remand the case for further proceedings consistent with this opinion.

MULLARKEY, J., dissents, and VOLLACK, C.J., and KOURLIS, J., join in the dissent.