Dunaway v. New York

We decide in this case the question reserved 10 years ago in Morales v. New York, 396 U. S. 102 (1969), namely, “the question of the legality of custodial questioning on less than probable cause for a full-fledged arrest.” Id., at 106.

I

On March 26, 1971, the proprietor of a pizza parlor in Rochester, N. Y., was killed during an attempted robbery. On August 10, 1971, Detective Anthony Fantigrossi of the *203Rochester Police was told by another officer that an informant had supplied a possible lead implicating petitioner in the crime. Fantigrossi questioned the supposed source of the lead — a jail…