Oak Park police say a jewelry store clerk was maced during a robbery Thursday night.
Police said a man asked to see a $12,500 Rolex watch at Diamond Connections on Greenfield Road.
After putting the watch on, he maced the 25-year-old clerk and took off running.
Police have released a surveillance picture of the suspected robber.
Anyone with information is asked to call Oak Park police at 248-691-7520.