DeKalb County police were looking Monday for a man who allegedly fired a gun while being questioned about a shoplifting at a Walmart store in Lithonia.

Authorities were seeking Marty Williamston, 36, of LaFollette, Tenn. on aggravated assault charges. Williamston had been detained by store security agent Kevin Qualls at the Walmart on Fairington Road after 10 p.m. on June 16, according to the police incident report.

Qualls said he was processing Williamston in a store office when Williamson pulled a handgun from a brown bag and pointed it at manager Johnny Bolton, the report stated.

Qualls said he wrestled Williamston to the floor and then Williamston fired one shot, according to the report, and fled in a sedan, leaving behind his bag and wallet.

Bolton told police he contacted security regarding Williamston after he tried to leave the store with a tool kit.