The thief called 911 about three hours later, Jones said. His name and his whereabouts are unknown.
Griffin police Lt. Joe Hudson was called to the motel and followed a foul odor to one of the rooms, authorities said.
Hudson later notified fire officials, who located the body.
“Identification documents found on the remains indicated (it was) Timothy Johnson,” the sheriff’s office said.
The body was taken to the GBI crime lab for an autopsy and positive identification.
“All indications are that the body recovered is Timothy Johnson,” Jones said. “No foul play is suspected at this time, but investigators are awaiting results from the autopsy.”