Washtenaw County sheriff's deputies are investigating an armed robbery that occurred Wednesday morning in the 2500 block of International Drive in Ypsilanti Township.

A woman was scraping ice off the windows on her car when a man, who was armed with a handgun, walked up behind her, a sheriff's department incident summary said. He demanded money, then left in a car toward Golfside Road at about 8:05 a.m., the summary said.

He was described as a light-skinned black male, 5 feet, 7 inches tall, in his mid-20s and clean shaven, the summary said. He was wearing a tan jacket, black-hooded sweatshirt and baseball cap with a gray bill, the log said.

His car is described as a late 1980s Oldsmobile with a silver stripe on the driver's side door, the summary said.