Jamell Hason Williams, 25, has been charged with armed robbery, burglary in the second degree and possession of a firearm during the commission of a crime.
Police said two men entered Windsor Package Shop, 4108 Windsor Spring Road, about 3 p.m. May 10 and demanded the owner get on the floor, then took cash.
The bandits were believed to be wounded after the owner fired shots as they fled. Lt. Calvin Chew said it appears they sought treatment at a hospital in the Atlanta area.
Police have named Colby Bryton as the second suspect.