Michael Kozel, 57, was shot and killed on January 2, 2013, during a robbery at his business, Independent Mufflers Inc., in Chicago’s Gage Park neighborhood. The attack took place about 5:20 p.m. when two armed men entered the shop and demanded money. Kozel was shot in the back as he tried to flee and later died at John H. Stroger Jr. Hospital of Cook County that evening.

Authorities released a sketch of the suspects and asked the public for help identifying them. Kozel is remembered as a dedicated family man and business owner, and his death was one of several homicides in the city’s early 2013 crime wave that prompted calls for better safety for local businesses.

If anyone saw activity near Independent Mufflers Inc. that afternoon or has information about the two men who entered the shop, please come forward.