In a news release, MDOC said Aaron Jones, 56, was pronounced dead at 5:14 am Monday at the Crossroads Correctional Center in Cameron.
Officials say Mr Jones was serving a 60-year sentence for first degree robbery and armed criminal action out of Jackson County. He was first received by the Department of Corrections in February of 1978.
Officials do not suspect foul play, but they say an autopsy will be conducted.