Sean “Diddy” Combs’ prison release date has changed again. He is serving his sentence at FCI Fort Dix in New Jersey. Related: Diddy's Intake Photo From New Jersey's Fort Dix Prison Revealed A new glimpse of Sean “Diddy” Combs as an inmate in federal prison has been revealed. CBS News published Diddy’s intake photo at FCI Fort Dix in New Jersey on Monday, November 10. The recent changes to Diddy’s release date come after multiple reports that the rapper was involved in an alleged altercation with another inmate at FCI Fort Dix.