The Westover police are looking for the robber who stole up to $5,000 from the "Smoker Friendly" store.
It happened just before 6 p.m. Sunday.
The police said the robber was wearing a mask and is described as a fair-skinned man wearing a flannel shirt or coat over a hooded sweatshirt.
They said he pulled a gun and told a customer to get on the ground before demanding money from the clerk.
Call the Westover Police at 304-296-6576 if you can help.