On the night of June 11, 1962, inmates Frank Morris and brothers Clarence and John Anglin escaped from Alcatraz Federal Penitentiary, a maximum-security prison located on Alcatraz Island in San Francisco Bay, California, United States. Late on the night of June 11, the three men tucked papier-mâché model heads resembling their own likenesses into their beds, broke out of the main prison building via ventilation ducts and an unguarded utility corridor, and departed the island aboard an improvised inflatable raft to an uncertain fate. A fourth conspirator, Allen West, failed in his escape attempt and remained behind.