LAWTON, Okla. (AP) — The Department of Corrections is investigating the killing of an inmate at a private prison in Lawton.

The agency said in a press release the body of 29-year-old Riley Walker was discovered Monday morning at the Lawton Correctional Facility. Walker's cellmate, 43-year-old Aaron Stone, confessed to the killing, the agency said.

Investigators with the agency's inspector general are investigating the incident and will forward their report to the local district attorney for consideration of charges, said DOC spokesman Justin Wolf.

Wolf said he could not release details of how...