Detectives released a picture of the man; he's described as mid 30's to 40 years old, over six feet tall and around 250-pounds.
The crime happened last Friday night at the Happy Market on Shields Avenue in Southeast Fresno. The suspect wore a ski mask, acted like he had a gun, and demanded money while threatening to shoot the clerk. The clerk handed over some money and the suspect ran away before officers arrived.
Anyone with information is asked to call police.