An armed man robbed a gas station and got away with an undisclosed amount early Thursday morning. The robber struck at the Shell station at 3241 S. Brea Canyon Road at 4:14 a.m.

Lt. John Saleeby of the sheriff’s Walnut/Diamond Bar station said the suspect demanded money from the clerk who handed over the cash. The robber was last seen running northbound.

He didn’t know what weapon the robber used.

The suspect was described as a Latino, 20 to 25, 5 foot 8 inches tall and weighing between 150 to 180 pounds. He wore a black hat, black pants and a black-and-gray jacket.