Rapid City police are asking for the public's help in locating a man who robbed a West Main Street business early Thursday afternoon.

The suspect is described as a Caucasian male, in his mid to late 40s, who has closely cropped hair and a large stomach. He was wearing a gray hooded sweatshirt and round glasses.

No one was hurt when the man showed a knife and took an undisclosed amount of cash from Jus Chil'n, at 2332 W. Main St., about 1:30 p.m.

The suspect vehicle is a tan or light-colored small to mid-size pickup with a Washington license plate. The pickup may have a sleeping bag visible in the rear window.

People with information about the suspect or the vehicle are asked to call 394-4131 or 394-4134.