Richmond County sheriff’s Sgt. Dan Carrier said Andrew Dunn, 17, and Derrell McNair, 18, robbed two individuals of money and jewelry on Walker Street around 4:30 p.m.
The two men were then fleeing when Dunn was shot in his buttocks on East Watkins Street.
Investigators said they were unable to locate the shooter.
McNair has been booked into the Richmond County Jail on possession of a firearm by a convicted felon, two counts of possession of a firearm during the commission of a crime and four counts of armed robbery.
Sgt. Bill Leisey said two of the armed robbery charges are from previous incidents.
Investigators are awaiting Dunn’s release from the hospital before pressing charges. Leisey said Dunn was also an accomplice on McNair’s previous armed robbery charges.
More charges for previous robberies are possible.