SHIRLEY -- Authorities are investigating the death of a 72-year-old inmate at the Souza-Baranowski Correctional Center in Shirley.

The Massachusetts Department of Correction says a correction officer on routine patrol discovered the severely injured inmate inside a cell at about 2 p.m. Tuesday. The inmate was pronounced dead about 35 minutes later after life-saving measures were unsuccessful. The inmate was not identified.

The death is being investigated by the correction department, the Worcester County District Attorney's Office and the Massachusetts State Police.