A masked man armed with a gun held up a business in the 4900 block of South Route 59 early Friday morning, Naperville police said.
The incident took place about 5 a.m., with the suspect reportedly stealing cash and a necklace belonging to a store employee before fleeing on foot, a police department news release said.
No one was injured in the incident.
The suspect is described as wearing black pants, a black hooded shirt and black gloves. Investigators believe he may have been dropped off at the location by someone driving a white sedan, the release said.
Anyone with information on the crime is asked to call the police at 630-548-2955 or to email NapervilleCrimeTips@naperville.il.us.