On the night of September 9, 2017, at about 11:40 p.m., a group was gathered behind a parked vehicle in the 11440-block of South Yale Avenue in Chicago’s Roseland neighborhood when two men emerged from an alley and began firing. Among the victims was 26-year-old Jacquell Mosley, a Black woman from the West Pullman neighborhood. She suffered multiple gunshot wounds and was pronounced dead at the scene.

Also killed in the attack were 30-year-old Dominic N. Morris, who lived on the same block, and 36-year-old Tyson White. Chicago police opened an investigation into the triple homicide; initial reports say the victims were standing behind the parked vehicle when the assailants approached and opened fire, and a community activist suggested the shooters likely surveyed the area before returning to shoot.

If anyone knew Jacquell Mosley or was in the 11440-block of South Yale Avenue that night, please share what was seen or heard with investigators.