A regular customer of a Valero Corner Store located north of downtown San Antonio is believed to be behind an armed robbery Monday night.
Around 10:45 p.m., San Antonio police said a woman walked into the store and displayed a knife to the clerk and then demanded cash.
Police said the suspected robber took an undisclosed amount of cash before she fled on foot.
Police believe the woman lives in an apartment complex a few blocks from the store.
They have a description of the suspect and the clerk told officers she is believed to be a regular customer. No injuries were reported.