The shooting happened at about 3:26 a.m. on Sunday in the 4200-block of W. Crystal Street in the West Humboldt Park neighborhood, Chicago police said.
A total of three people were shot and according to CPD they al self-transported to area hospitals. They were all later relocated to Stroger hospital.
A man, 23, had a gunshot wound to his neck and groin. A 16-year-old boy was shot in the right armpit.
An 18-year-old was shot multiple times in the torso and his right arm. He died at Stroger hospital on Tuesday.
The medical examiner identified the 18-year-old as Erik Colon.
At last check, the other two victims were in critical condition.
Nobody is in custody.
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