Donell Morrison, 17, was shot and killed on July 24, 2015, in Chicago’s North Lawndale neighborhood. The shooting occurred around 6:45 p.m. in the 1200 block of South Kolin Avenue; Morrison was struck in the back and died at the scene despite emergency responders’ efforts.

His death came during a summer of sharply increased gun violence across Chicago in 2015, a year that saw more homicides than in previous years. North Lawndale was among the neighborhoods hit hard by that wave of shootings, which the account ties to gang conflicts, easy access to firearms, and socioeconomic disparities. Morrison’s killing illustrates the toll that the 2015 surge in gun violence took on young people in the city.

If anyone knew Donell or has information about the shooting, please share what can help investigators or his family.