A man posing as a city police officer was arrested Saturday afternoon at a South Baltimore flea market, police said.

A sheriff's deputy was attending the flea market in the 1400 block of W. Patapsco Ave. in Brooklyn at about 4 p.m. when he noticed a man walking around in a Baltimore "special police" T-shirt, with a silver badge and a silver handgun on his hip, said Anthony Guglielmi, the Police Department's chief spokesman.

Guglielmi said the sheriff's deputy confronted the man, who was not able to produce any documentation of being a police officer, and the deputy called police.

Officers determined that the man, Thomas A. Godley, 32, of the 200 block of E. Lafayette St., was a convicted felon who was not allowed to carry a handgun. They seized a black holster, the navy blue "police" shirt, a private security officer badge and a Walther P99S handgun, Guglielmi said.

Godley faces two handgun charges and a charge of impersonating an officer, according to Guglielmi.

A review of electronic court records did not show any felony convictions for Godley, though he was charged with handgun violations in 2005. Those charges were dropped.