Tanijay D. Peterson-Colon, 20, was shot and killed in the early morning darkness of July 19, 2025, on the 8200 block of South Houston Avenue in the South Chicago neighborhood. Officers arriving just before dawn found him with a gunshot wound to the neck; he was pronounced dead shortly afterward. The Cook County medical examiner identified him and confirmed the date of death.

The same burst of gunfire struck three other people: a 22-year-old woman hit in the arm and listed in good condition, and two men, 25 and 38, who suffered abdominal wounds and were reported initially in serious condition. The shooting was logged around 4:52 a.m. Detectives opened an investigation but reported no one in custody and offered no suspect description.

Public details do not explain who fired or why the shooting occurred. Does anyone who was in that area before dawn on July 19 have information that could help investigators?