The incident occurred about 10 a.m. Wednesday, Strength said Thursday. The victim, Earl Bolar, had been arrested on a disorderly conduct charge and was sleeping in a holding cell with five others when one of the detainees, Jeremy Taylor , began punching him in the head.
Taylor knocked Bolar to the floor and began kicking him in the head, Strength said.
Bolar was taken to the Medical College of Georgia Hospital, where he was treated for head injuries.
Taylor, who had been arrested for disorderly conduct, is now also charged with aggravated battery.