PINE BLUFF, Ark. (KTHV) -- A prison inmate dies following an assault that happened 13 days ago.

A 25-year-old inmate, John Demoret, was serving ten years for manslaughter. He was assaulted July 28 at the Tucker Unit. He was later taken to Ouachita River Correctional.

Around 5:00 Thursday morning, Demoret was taken to the hospital. Doctors pronounced him dead at 6:15 a.m.

State police and the Arkansas Department of Corrections are each investigating the assault.