Niko L. Walker was 21 when he was shot and killed in Chicago on December 25, 2016. His death occurred during an extremely violent Christmas weekend in the city that saw about 60 people shot and 11 killed, part of a broader surge of gun violence across neighborhoods from East Chatham to Humboldt Park.

Niko was one of several young men gunned down across the city that day. There were no immediate arrests or suspects identified in his murder, and his case remained among many homicides the Chicago Police Department was investigating amid persistent difficulties solving shootings that year.

If anyone knew Niko, saw activity in his neighborhood on December 25, 2016, or has information that could help investigators, please come forward.