Nassau County police are looking for a masked man who robbed a Shell gas station in South Valley Stream at knifepoint late Monday.

The suspect entered the station at 928 Rosedale Ave. at about 9:21 p.m., went behind the counter -- where the clerk was working -- and took a cash register drawer with an undisclosed amount of cash, police said.

The clerk, who was not injured, left the store and notified police as the suspect was taking the register drawer.

The suspect fled westbound on Rosedale Road toward the Queens border, police said.

No customers were in the station at the time of the robbery.

Anyone with information can call Crime Stoppers at 800-244-8477. All information will be kept confidential.

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