It closed in 2000 with the opening of the nearby Bellamy Creek Correctional Facility, then was reopened in 2007.
The Michigan Reformatory closed in November 2022 as inmate numbers continue to decline.
100 corrections officers and state police contained the inmates with tear gas.
Three or four corrections officers were reported slightly injured in the disturbance, which began about 8:10 P.M.
Arson, looting and vandalism, began shortly after damaging 30 buildings.