`` I 'm as certain as I could possibly be , '' Zerilli told the station . ` Teamsters boss Jimmy Hoffa disappeared on July 30 , 1975 . A man connected with Detroit 's organized-crime family says he knows where Hoffa was buried . The Associated Press reports that the remains of Hoffa, who died in prison at age 75 after being convicted for tax evasion, are believed to be somewhere near his burial plot in an unmarked grave in Detroit. The FBI declines to comment on the man 's claims .
Teamsters boss Jimmy Hoffa disappeared on July 30 , 1975 . A man connected with Detroit 's organized-crime family says he knows where Hoffa was buried . The Associated Press reports that the remains of Hoffa, who died in prison at age 75 after being convicted for tax evasion, are believed to be somewhere near his burial plot in an unmarked grave in Detroit. The FBI declines to comment on the man 's claims .