Police from St. Charles, Aurora, North Aurora, Yorkville, Batavia and Oswego are all working together to find a man who has been breaking into Dunkin' Donuts stores.
A thin man dressed in all black has been smashing out windows of Dunkin' Donuts stores and stealing money.
He has left a few of the locations empty handed.
Police say if the cash isn't quickly accessible, he runs.
Anyone with information can call their local police department.