The shooting happened in the Altgeld Gardens neighborhood's 13100-block of South Corliss Avenue just after noon, according to Chicago police.
Three people were inside a home when someone shot at them.
A 16-year-old boy, shot nine times, was transported in critical condition to Christ Hospital, where he died.
He was later identified as Makai Rodriguez by the medical examiner.
A 17-year-old boy, shot eight times, was taken to the University of Chicago Medical Center in critical condition.
An 18-year-old man, shot in his arm, was taken to the University of Chicago Medical Center in good condition.
Area Two detectives are talking to a person of interest.
RELATED | 16-year-old fatally shot 9 times, 2 others injured in shooting at Altgeld Gardens home
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