Police are reviewing surveillance video, hoping to catch an armed robber.
This is the second time this week the Shell gas station on Main Street Extended in Georgetown has been held up.
Surveillance video from late Wednesday night shows the robber approaching the convenience store. The man opens the door just to tell the clerk to bring him the money from the register..
"The robber did not actually enter the store, but opened the door and stood in the doorway there an then demanded that she produce the money from the cash register," says Lt. Robert Swanigan, with Georgetown Police.
Witnesses told police the robber was showing what looked like a handgun. His face was covered by a bandana and hat.
The store clerk complied, and put the cash in a plastic bag to toss toward the robber, waiting at the door.
The robber ran off and two customers chased after him. Police say they were able to keep up with him for a couple of blocks, and then they saw him get in a car. They say it was a blue Volks Wagon.
Police say about 15 minutes before the robbery, the Georgetown Walmart received a bomb threat.
"It indicated that there was an explosive device in the building, and it was set to go off, and they actually gave a time," Lt. Swanigan says.
Police say it possibly was a plan to divert police attention from the robbery that would follow.
Police say witnesses describe the robber as a white man, about 5'10" - 6' tall, 175 lbs., wearing a black shirt and black pants, white shoes, a red bandana and hat.
The same Shell station was robbed early Sunday. Police charged Broderick Williams in that case.
Another Shell station in Georgetown was also robbed Sunday. Police have not made any arrests in that incident. They don't know if the robberies could be connected.