An Arlington man was arrested Monday after he allegedly left a receipt at a store he had just robbed.

The incident happened around 2:00 p.m. at a store inside Ballston Common Mall. Police say Matthew Martin, 45, purchased some DVDs at the store. Before he left, however, a store clerk noticed that he was trying to conceal other items that he did not buy, according to Arlington County Police Department spokesman Dustin Sternbeck.

At that point, police say, Martin displayed a knife, threatened the clerk and fled the scene without paying for the concealed merchandise.

Police were able to use the identification information from Martin’s receipt for the DVDs he purchased to arrest him at his Arlington home a short time after the crime, Sternbeck said. He was charged with robbery and held without bond.