Georgia Bureau of Investigation Agent Todd Lowery said the attack Thursday killed 46-year-old Larry Stell. Lowery told The Macon Telegraph that the attack happened in a dormitory where 80 inmates were held.
Stell's body was taken to an Atlanta crime laboratory for an autopsy.
Further details on the killing were not immediately available.
Lowery said the inmate suspected in the killing has been transferred to another prison and will be held there until he's charged in the case.