The suspect is described as a white male wearing a brown jacket, light colored blue jeans and had a gray stocking cap covering his face. The suspect threatened the store clerk with a gun but a gun was never actually seen.
An undetermined amount of money was taken in the robbery and no injuries were reported.
The suspect ran north after committing the robbery.
Murphy said police are continuing their investigation and are following up on leads. Anyone with information on this crime or any other crime are encouraged to contact the Altus Police Department at 482-4121 or Crime Stoppers at 482-TIPS(8477).