The dog, called Jimi, was taken Monday from the kennel at the Lamar County home of his handler, Griffin police Cpl. Chad Moxon. The dog's body was found along a road near Yatesville Wednesday. Moxon says his other dog was found alive but badly beaten.
The Atlanta Journal-Constitution reports that Moxon and his family had already offered a $1,000 reward, so the total reward is now $6,000.
Jimi was trained to detect drugs and explosives and track people.
The Lamar County Sheriff's Office is investigating.