CORNELIUS, N.C. -- Cornelius police hope new pictures of two men who used credit cards taken during an armed robbery at a convenience store will give them a break in the case.

Investigators believe the men robbed a Petro Express on West Catawba Avenue on Oct. 5 at about 6 a.m. and stole credit cards from two clerks. Officers said they were captured by surveillance cameras using the stolen cards a half-hour later at Charlotte stores.

Police also saw a black Chevy Impala on the surveillance cameras that they think the men were driving.

Before the pictures were discovered, a man's voice captured by Petro Express cameras was the only clue police had in the case. The men covered up their faces during the robbery. One ordered a clerk to open a cash register while a second forced another clerk to lie on the ground and give up his wallet. They also took the female clerk’s purse.

One thief has a slim build, is about 6 feet tall and is in his early 20s. The second also has a slim build, is about 5 feet 10 inches tall and is in his late teens or early 20s.

If you recognize either one of the men or have any information that can help investigators, call North Mecklenburg Crime Stoppers at 704-896-7867.

• RAW VIDEO: Cornelius Petro Express Robbed At Gunpoint