Marquis Chamberlain, 19, was fatally shot on June 10, 2015, in Chicago’s North Lawndale neighborhood. The three juveniles were later arrested and charged with first-degree murder in connection with his death.

Chamberlain’s killing was described as part of a broader surge of shootings in Chicago in 2015, with violence concentrated on the West and South Sides and prompting calls for more youth programs and violence-prevention efforts.

Did anyone in North Lawndale at the time see or hear anything that could shed more light on what happened that night?