Officers responded to a report of an armed robbery Wednesday at a business in the 10000 block of San Pablo Avenue, police said.
A short time earlier, a man entered the business, brandished a handgun and demanded money.
The suspect fled the scene on foot and remains at large.
Police said the suspect is described as a black man who is about 25 to 30 years old and is roughly 6 feet tall and about 170 pounds with brown eyes. He was last seen wearing a black cap, black sunglasses and a black baseball cap.
Anyone with information about this robbery or who may be able to identify the suspect is asked to call Detective Cpl. Gilbert Tang at (510) 215-4423 or Detective Lane Matsui at (510) 215-4420.