Cassius White was killed in a drive-by shooting in the Washington Heights neighborhood that also left a teenage boy wounded.
White, 19, and the 16-year-old boy were in the 9600 block of South Sangamon Avenue when shots were fired about 12:30 a.m., authorities said.
White, of the 8200 block of South Dante Avenue, was shot in the abdomen area and died at Advocate Christ Medical Center in Oak Lawn at 5:54 a.m., according to the Cook County medical examiner's office.
The 16-year-old was also wounded, but survived, police said.
Nobody has been charged for the murder.
Area South detectives are investigating.