Federal agents said shortly before 12:30 p.m. on Thursday, Sept. 22, the suspect robbed the Huntington Bank inside the Jewel Osco store at 4355 North Sheridan Road.
The suspect is a described as a white man in his 50s with a large build. He was wearing a black cap, blue mask, dark zip-up jacket, dark pants and dark shoes.
The FBI warned the man should be considered armed and dangerous.
A $1,000 reward is offered for any information leading to the arrest and conviction of the suspect.