State police say a prisoner at the Ojibway Correctional Facility in the western Upper Peninsula was attacked and killed.
Detective Sgt. Russell Larson at the Wakefield post said Monday that troopers got a call about an assault on an inmate Friday. Larson says the inmate died at a hospital the next day.
Larson didn't identify the victim, but WLUC-TV says he was 26-year-old Randolph Conner and died from a brain injury. It says two other inmates punched and kicked him and says the prison has put them in higher-security detention.
Conner was serving time for home invasion, safe-breaking and larceny.
The prison is in Gogebic County's Marenisco Township, about 20 miles east-southeast of Ironwood.