Jacquel Mosley, 26, was shot and killed on September 9, 2017, in Chicago. Her body was found in the South Shore neighborhood, an area that year marked by significant gun violence and part of a citywide surge that pushed Chicago’s homicide total above 600 in 2017.

The case is described against a larger backdrop of systemic issues cited for the city’s violence: poverty, widespread availability of illegal firearms, and persistent gang activity.

If anyone knew Jacquel Mosley, witnessed the shooting, or has information that could shed light on what happened that night, please come forward with tips for the investigation.