Three runaway prisoners from 'escape-proof' Alcatraz in 1962 may still be alive

A new study has revealed that three convicts who fled from the famous "escape-proof" Alcatraz prison on June 11, 1962 might still be alive despite the believe that they died in the jailbreak.

A Dutch team of scientists from Delft University and the research institute Deltares stated that Clarence Anglin, John Anglin and Frank Morris, who were never seen again after sailing a makeshift raft from San Francisco's jail, would be 83, 84 and 88, if they survived in their ordeal and gone into hiding, the Mirror reported.

The three bank robbers spent months digging an escape tunnel with metal spoons, then duped guards using fake heads made from soap, toilet paper and hair. FBI files state they entered the water on an improvised life raft made from coats some time between 8pm and 2am.

Fedor Baart, a simulation specialist at Deltares explained that if they left between 11pm and midnight, there was a good chance that they reached Horseshoe Bay north of the Golden Gate Bridge and survived.