MOOSE LAKE, Minn. — A 39-year-old inmate at a correctional facility in Moose Lake died on Tuesday morning. A cellmate reported to staff around 10:40 a.m. that the man was unresponsive in their room, the Department of Corrections said. Staff attempted to start life-saving measures, but the man died.

A 39-year-old man incarcerated at the Minnesota Correctional Facility in Moose Lake died Tuesday, authorities said. In a news release Wednesday, the Minnesota Department of Corrections said its investigating the man's death in coordination with the Midwest Medical Examiner's Office.

The Minnesota Department of Corrections (DOC) said the 39-year-old man died despite life-saving efforts from staff. The incident is still being investigated. The Midwest Medical Examiner's Office is working to determine what caused the man's death.

The death of a 39-year-old inmate at the Moose Lake prison is under investigation, according to the Minnesota Department of Corrections. (Vince Tuss/The Minnesota Star Tribune) Authorities are investigating the death of a 39-year-old inmate at the Minnesota Correctional Facility in Moose Lake,