Peter Limone (left), 73, of Medford, spent 33 years in prison, and Salvati, 74, of the North End, spent nearly 30 years behind bars. Tameleo and Greco died in prison before they were exonerated.

Limone and Tameleo were alleged to be Mafia leaders at the time of Deegan's murder, and Greco and Salvati had minor criminal records.