A death row inmate at Atmore’s Holman Correctional Facility was found dead in his cell Monday morning, according to information from the Alabama Department of Corrections.

A corrections officer found John Milton Hardy, 43, unresponsive in his cell during an early morning security check. Medical officials responded, but were unable to revive Hardy, and a corrections doctor pronounced him dead at 3:23 a.m.

Hardy’s body was turned over to the Alabama Department of Forensic Sciences for an autopsy. The cause of death remains under investigation.

Hardy and Ulysses Charles Sneed, 45, were both sentenced to death for the 1993 murder of Clarence Eugene Terry. Hardy and Sneed were convicted of killing Terry by shooting him multiple times during the armed robbery of a convenience store in Decatur, where Terry was employed as a clerk.