A prisoner is being charged will killing a fellow inmate at the Mansfield Correctional Institution last year.
Sean Hammen, 46, has been charged with the murder of Robert Parr.
Parr, 62, died during a fight with Hammen.
Hammen was in jail after being convicted of killing his girlfriend in 2008. Parr was behind bars on a rape conviction.
Richland County prosecutors are pursing the death penalty in the case.