An anonymous donor has offered a reward for information about a man who robbed a Granite City car wash at gunpoint Wednesday.

According to a press from the Granite City Police Department, a man armed with a gun and wearing a surgical mask and hoodie entered the car wash on the 1500 block of Niedringhaus Ave. at around 1:15. He grabbed money out of the cash register and ran off.

Police are looking for help identifying the man. Anyone with information is asked call the Granite City Police Department at (618) 877-6111.

A $500 reward is being offered by an anonymous donor.