The three men in question are convicted bank robber Frank Morris, John Anglin and his brother Clarence Anglin. On June 11, 1962, the trio successfully escaped the maximum security prison after posing heads in their beds that were pushed through holes of a concrete wall.

The marshals sent the letter to FBI lab analysts — who looked at fingerprints and DNA — as well as handwriting experts who examined the writing. All results came back inconclusive. Letter possibly from famous Alcatraz escapee says they survived escape and that he lived in North Dakota for eight years.

The U.S. Marshals Service has released updated age progression photos of the three infamous men who pulled off the great escape from Alcatraz more than 60 years ago. The 1962 escape is probably the most famous prison break in American history, and the three men involved have never been located, dead or alive.

A fourth conspirator, Allen West, failed in his escape attempt and remained on the island. Alcatraz Island, San Francisco, California, U.S.

Assuming any of them survived the currents in the San Francisco Bay while fleeing the Rock (and that they also survived the intervening 60 years), all the men would be into their 90s.

In 1979 the FBI officially concluded, on the basis of circumstantial evidence and a preponderance of expert opinion, that the men drowned in the frigid waters of San Francisco Bay without reaching the mainland.

during which the prison housed about 1,500 total prisoners, only 14 total escape attempts were made. Of those who attempted to escape, none are believed to have successfully made it to shore without drowning, being captured, or being shot during the attempt.