The aggravated robbery happened just after 2:00 at the Fas-Pac food store on Central Freeway.
They say a heavy-set male entered the store wearing a Texas Longhorns beanie cap pulled over his head and demanded money from the store clerk.
The clerk was not injured.
They say the robber ran away with an undetermined amount of cash.
He was last seen wearing a gray and blue jacket with white pants. Police say the suspect is described as being about 6 foot 2 inches tall, weighing just over 200 lbs.
If you have any information you're asked to call Crimestoppers at 322-9888.
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