The incident happened Saturday, at a market on the 5100 block of Lee Highway, around 10:15 p.m.
A clerk was clearing out the cash register around closing time when a masked man entered and brandished a gun. A second employee, in defense of her coworker, then started throwing bottles at the armed man, according to Arlington County Police.
The robber fled the store and the area empty-handed.
Police say the crime was not reported until Monday, which is hindering the investigation.
“We always encourage people to report crimes to the Arlington County Police Department as soon as possible,” said ACPD spokeswoman Ashley Savage. “That always assists in the investigation.”
From an ACPD crime report:
LATE ATTEMPTED ARMED ROBBERY, 160418039, 5100 block of Lee Highway. At approximately 10:15 p.m. on April 16, an unknown male subject entered a store and brandished a firearm. A female employee was able to defend a male clerk by throwing glass bottles at the suspect. The suspect fled the scene on foot without any merchandise. The suspect is described as a male, approximately 5’9″ tall and weighed 150 lbs. He was wearing a black hooded sweatshirt, mask, and black or dark green gloves.