It happened at the Shell station on Highway 99 and Ashlan. Police say two men and a woman robbed the store around 10:30 p.m. Thursday night.
Officers say one of the robbers had a gun. They said the robbers tied up the clerk, put a bag over his head then took off with money. Police say the clerk was not hurt.
Investigators are now looking at surveillance video from the store to get clues about the robbers.