A Diamond Shamrock on the 700 block of East Fillmore Street was held up Wednesday night.
The crime happened around 9:30 p.m.
Scanner traffic indicates the suspect had a gun and got away with cash.
The suspect was thin and wearing a Green bandana. He was last seen walking Eastbound on Fillmore Street.
Call CrimeStoppers at 719-634-STOP if you have any information.