Cite as: 529 U. S. 266 (2000)
Kennedy, J., concurring
zure. An anonymous telephone tip without more is different, however; for even if the officer's testimony about receipt of the tip is found credible, there is a second layer of inquiry respecting the reliability of the informant that cannot be pursued. If the telephone call is truly anonymous, the informant has not placed his credibility at risk and can lie with impunity. The reviewing court cannot judge the credibility of the informant and the risk of fabrication becomes unacceptable.
On this record, then, the Court is correct in holding that the telephone tip did not justify the arresting officer's immediate stop and frisk of respondent. There was testimony that an anonymous tip came in by a telephone call and nothing more. The record does not show whether some notation or other documentation of the call was made either by a voice recording or tracing the call to a telephone number. The prosecution recounted just the tip itself and the later verification of the presence of the three young men in the circumstances the Court describes.
It seems appropriate to observe that a tip might be anonymous in some sense yet have certain other features, either supporting reliability or narrowing the likely class of informants, so that the tip does provide the lawful basis for some police action. One such feature, as the Court recognizes, is that the tip predicts future conduct of the alleged criminal. There may be others. For example, if an unnamed caller with a voice which sounds the same each time tells police on two successive nights about criminal activity which in fact occurs each night, a similar call on the third night ought not be treated automatically like the tip in the case now before us. In the instance supposed, there would be a plausible argument that experience cures some of the uncertainty surrounding the anonymity, justifying a proportionate police response. In today's case, however, the State provides us with no data about the reliability of anonymous tips. Nor do we know whether the dispatcher or arresting officer had any
275
Page: Index Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: October 4, 2007