A clerk at a PetSmart store in San Mateo was injured during an armed robbery of the store on Saturday night, police said.

San Mateo police responded to reports of an armed robbery at the PetSmart at 3520 S. El Camino Real shortly after 8 p.m.

Police said that a suspect armed with a handgun entered the PetSmart and approached one of the sales clerks. The suspect demanded cash and then fired several shots at the clerk and fled from the store, police said.

The clerk, a 34-year-old San Mateo man, suffered a gunshot wound and was transported to a nearby hospital. His injuries were not life threatening, police said.

There were about 15 customers in the store at the time of the robbery, and police interviewed witnesses at the scene. Part of South El Camino Real was closed for about an hour during the investigation.

Police said the suspect is described as a black man between 30 and 35 years old, stands 5 feet 9 inches tall and weighs about 180 pounds. He was wearing a black cap and sweatshirt, police said.