According to police, a suspect used a silver, semi-automatic handgun to rob the Boost Mobile store at 361 Six Flags Drive in Austell.
Investigators say a black male, 6 feet tall with a dark complexion and approximately 190 to 220 pounds, entered the store at 6:19 p.m. and demanded money at gunpoint. He fled the business with an unknown amount of cash.
The man was last seen wearing a blue hooded sweatshirt and a black mask.
Anyone with information about the incident is asked to call (770) 499-3945.