HERCULES -- A man was robbed at gunpoint at an ATM on Monday, police said.

The man was using the ATM at Wells Fargo Bank on the 1600 block of Sycamore Avenue at 4:40 a.m. when a man walked up, pointed a gun at him, and demanded money, according to Hercules police.

The suspect picked up the wallet after the victim dropped it, and then ran toward Refugio Valley Park. Police searched the park but did not find him.

The suspect is described as a black man in his late teens, about 5-feet 7-inches and approximately 150 pounds. He was last seen wearing blue jeans, a black sweatshirt, black baseball hate and a blue bandanna across his face.

David DeBolt covers breaking news. Contact him in Richmond at 510-262-2728. Follow him at Twitter.com/daviddebolt.