Niagara police are investigating after an armed man robbed a pharmacy in Niagara-on-the-Lake.Officers were called to Simpson’s Apothecary around 12:30 p.m. on Saturday.Police say a man armed with a weapon stole a quantity of narcotics from the pharmacy and fled out the rear door to an awaiting Black GMC Terrain.The suspect is described by police as white, six-feet-tall, and a thin build. He had his face covered and was wearing black jeans, and a black hooded sweatshirt. No one was hurt during the robbery. Anyone with information is asked to contact police at 905-688-4111, ext. 2200.