UPDATED | March 7, 2017 1:55 PM

Follow CBSDFW.COM: Facebook | Twitter

ARLINGTON (CBSDFW.COM) – Arlington Police say a convenience store clerk shot and killed a masked robber Monday night.

It happened at the Super Save in the 2500 block of East Abram Street around 7:45 p.m.

Police on Tuesday said the robber was 22 years old, but have not released his identity.

Another clerk was hiding in a cooler when the shooting happened, according to police.

“The clerk says that this was a robbery attempt and that the suspect had a firearm. If he feared for his life, that’ll have to be determined based upon the interview, there’s a possibility this use of force could be justified,” said Arlington Police Lt. Chris Cook.

Police interviewed both clerks and a customer who was in the store.

A review of surveillance video “reaffirmed the clerk’s initial statements,” according to an Arlington Police Department news release on Tuesday afternoon.

The case has been forwarded to the Tarrant County DA’s officer for further review.