Sean "Diddy" Combs ' life behind bars is coming to light.

In a photo taken from inside New Jersey's Fort Dix Federal Correctional Institution on Nov. 23, the rapper wore a gray pullover and sweatpants as he walked down a corridor. With his graying hair and goatee in full view, Combs appeared to smile at a fellow inmate standing off-camera.

In another video published by TMZ , the footage of which E! News could not independently verify, Combs was clad in the same prison-issued garb—as well as a dark jacket and yellow knitted beanie—while working inside the chapel library.

Combs was transferred to Fort Dix from the Metropolitan Detention Center in New York late October after he was sentenced to 50 months in prison on prostitution-related convictions. He spent his 56th birthday on

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