A store in Courthouse was the scene of an armed robbery early Thursday morning.

According to a police report, a man walked into a business on the 2000 block of Clarendon Blvd around 1 a.m. and flashed a gun at a store clerk. He then ran off “with an undisclosed amount of cash and merchandise.”

The only business on that block open at 1 a.m. is a 7-Eleven store.

More from Arlington County Police:

ROBBERY, 2018-10040006, 2000 block of Clarendon Boulevard. At approximately 1:05 a.m. on October 4, police were dispatched to the report of an armed robbery just occurred. Upon arrival, it was determined that an unknown suspect entered a business, approached the front counter and requested to purchase merchandise. As the employee retrieved merchandise from behind the counter and presented it to the suspect, the suspect lifted his shirt, displaying a firearm, and demanded the employee give him cash. The suspect then fled on foot with an undisclosed amount of cash and merchandise. The victim was not injured. The suspect is described as a black male with a medium skin tone, approximately 6’0″-6’3″, with a medium build, wearing a red shirt on top of his head, a black rag covering his hair, a black short-sleeved t-shirt, black pants, and basketball shoes. The investigation is ongoing.