Prince William County police are asking for help finding the masked man who robbed a Dumfries pizza shop at gunpoint.

Police said the gunman entered the Vocelli Pizza at 16693 River Ridge Blvd., brandished a handgun and demanded money. The man fled the restaurant after obtaining cash. No injuries occurred during the robbery, which happened Wednesday at about 8:45 p.m. A police K-9 searched the area, but the robber wasn't located.

The robber is described as black, about 6 feet tall and 155 pounds. He had a thin build and was last seen wearing black jeans, a black jacket, black-and-white shoes and a mask.

- Emily Babay