RANCHO CUCAMONGA (CBSLA) — Police are searching for a man who robbed a gas station at gunpoint early Sunday morning.

The Rancho Cucamonga Police Department says deputies were called to the Chevron gas station near Foothill Marketplace in Rancho Cucamonga at 7:46 a.m.

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After investigation, deputies learned the suspect approached the register, pulled out a handgun and demanded money from the cash register. The employee complied, after which the suspect fled the store.

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The San Bernardino County Sheriff’s Department helicopter assisted in the search for the suspect, who remains on the loose.

According to police, the suspect is described as a Hispanic male adult with stubble facial hair, about 5’8″ and around 180 pounds. At the time of the robbery, the suspect was wearing a black or gray beanie, dark pants with a white stripe down the side of the pant leg, a dark long-sleeve sweater and a white Ski vest.

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Anyone with information regarding the suspect or the investigation is asked to contact authorities at 1-800-78-CRIME (27463).