The Arizona Department of Corrections said Monday they are investigating the death of an inmate at the state prison in Florence.
Department spokesman Bill Lamoreaux said 38-year-old Raymundo Morin died Thursday from an apparent suicide.
The investigation will be led by the department's criminal investigation unit in consultation with the county medical examiner's office.
Records show Morin was serving an 18-year sentence for second-degree murder out of Cochise County.
He began serving his sentence on Sept. 7, 2005 and was housed at the Arizona State Prison Complex-Eyman.
Copyright 2013 Associated Press. All rights reserved. CBS 5 (KPHO Broadcasting Corporation) contributed to this report.