The three victims were inside a vehicle when they were hit by gunfire from an unknown offender, police said, ABC7chicago reported.
One victim, a 38-year-old man, suffered a gunshot wound to the back and chest and was pronounced dead at the hospital, police said. A second victim, whose age was not immediately known, suffered a gunshot wound to the chest and was also pronounced dead at Christ Hospital.
The third victim, whose age was also not known, suffered gunshot wounds to the face and shoulder, and he was initially reported to be in critical condition at the hospital, police said.
No one was in custody as police continue to investigate.