Jamal B. Robinson was 23 when he was shot and killed October 18, 2016, in Chicago’s Chatham neighborhood. He was found in the 8100 block of South Drexel Avenue with gunshot wounds to his head and torso and was taken to Advocate Christ Medical Center, where he died shortly afterward.

His death is one of many that year in a wave of gun violence that pushed Chicago’s homicide numbers sharply higher in 2016. The killing left family and community members grieving and demanding action, and investigators continued working the case amid the wider difficulties of solving gun-related homicides in the city.

If anyone knew Jamal, saw activity near South Drexel Avenue that day, or has information that could help, please come forward.