Police are investigating an armed robbery at The Cigarette Shopper in Windham.

A man wearing a bulky winter coat with an orange ski mask and baggy jeans entered the store at 778 Roosevelt Trail at 10: 39 this morning, told the clerk he had a weapon and demanded that the safe be opened, according to Sgt. David Thomas of the Windham Police Department.

Having no key, the clerk could not open the safe, so the robber told the clerk to lie on the floor of a back storeroom, after which the robber fled with an undisclosed amount of cash, Thomas said. The thief took no cigarettes.

Witnesses reported seeing the man enter a blue minivan and drive into the parking lot of the neighboring Walmart store. Anyone with information about the robbery is asked to contact Detective Williams of the Windham Police at 892-2525.