Michelle Andrian Cano, 21, was one of four people killed in a mass shooting on September 15, 2017, in Chicago’s Brighton Park neighborhood. Cano and three others — Ida Arvizu, 28; Joel Sandoval, 24; and Miguel Sandoval, 27 — were inside a vehicle at the intersection of 47th Street and South Fairfield Avenue around 8:40 p.m. when a white SUV pulled up and someone inside opened fire with a rifle, killing all four occupants instantly.

A memorial with candles, balloons and personal items was later placed at the scene; messages on a poster board and a lamppost reflected the grief of friends and family. Police described the attack as likely gang-related and linked it to a series of rifle shootings affecting Brighton Park and Back of the Yards, noting the prevalence of semi-automatic rifles in those conflicts. No arrests were announced immediately after the shooting and investigators said witness cooperation and fear of retaliation were obstacles to the inquiry.

Did anyone in the area that night see the white SUV or know who might have been inside?