Damion Richardson was 27 when he was shot and killed in Chicago on August 9, 2012. His death came during a spike in the city’s homicide count that year, when Chicago recorded more than 500 homicides, and occurred in a neighborhood heavily affected by gun violence.

The shooting is one of many incidents from that period that remained unsolved despite attention from law enforcement and community groups working to curb the violence.

If anyone knew Damion, witnessed the shooting, or has information that could help investigators, please come forward.