A masked man with a handgun robbed a cell phone store Saturday afternoon, officials said.

The heist was reported just before 6 p.m. at Bell Star Wireless, in the 16400 block of Colima Road, Los Angeles County sheriff’s Sgt. Bob Boese said.

The robber entered the store and demanded money at gunpoint, Boese said. He fled with an undisclosed amount of cash, and was last seen running north on Punta Del Este Drive.

A man and woman working at the store were not injured, he added.

Deputies described the robber as a white or Latino man in his 20s, about 5 feet 5 inches tall and 130 pounds. He wore all-dark clothing and a mask.

The robbery was being investigated by detectives from the sheriff’s Industry Station.