A man in a ski mask and armed with a gun robbed the Subway restaurant at 3750 Savannah Highway Wednesday morning.

An employee at the restaurant told Charleston County sheriff's deputies that a man took money from the cash register, locked the employee in the restroom and fled. The employee described the robber as a black man, about 5-foot-8 and medium build, wearing a brown sweater, black jeans and a ski mask.

Anyone with information in this incident should call the Charleston County Sheriff's Office at 843-202-1700 or Crime Stoppers at 843-554-1111.