( CNN ) -- Some of Alcatraz escapees may have survived their journey , study says . Two brothers and colleague escaped in August 1962 and were never seen again . It 's likely they died , but if their luck was right they could have made it , study says . One person is known to have escaped from Alcatraz while it was a federal prison .
Some of Alcatraz escapees may have survived their journey , study says . Two brothers and colleague escaped in August 1962 and were never seen again . It 's likely they died , but if their luck was right they could have made it , study says . One person is known to have escaped from Alcatraz while it was a federal prison .