Dennis Walls, an 18-year-old African American man from Chicago’s South Side Bridgeport neighborhood, was shot and killed in Calumet City, Illinois, on January 15, 2018. The shooting occurred around 3 p.m. in the first block of Highland Street; emergency crews attempted life-saving measures but Walls was pronounced dead at the scene at 3:16 p.m. An autopsy the next day confirmed multiple gunshot wounds and ruled the death a homicide.

Investigators tied the killing to an armed robbery connected to an illegal gun sale meeting. Calumet City police and the South Suburban Major Crimes Task Force arrested 23-year-old Marvel Turnbo in Blue Island and charged him with first-degree murder. A second suspect, 19-year-old Kanique Kuykendoll, remained at large; the FBI offered up to a $5,000 reward for information leading to his arrest.

Anyone who knew Dennis, witnessed the shooting, or has information about the robbery or the second suspect is asked to come forward.