About 8:15 p.m., police said, a man entered the store, displayed a firearm and ordered a worker to give him money from the register.
Police have released a photo of the suspect taken from surveillance video in the store.
The suspect is black, 5-feet-7 to 5-feet-10 inches tall, of average build with a mustache and goatee. He was last seen wearing a blue T-shirt and jeans.
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