The shooting appeared to be gang-related, police said.
The error occured on a night when three people were killed and eight wounded.
Brandon Wilson was shot and killed in the 0-100 block of North Laramie Avenue.
The driver allegedly led police on a wild chase in Jefferson Park after causing multiple wrecks on I-94.
The fatal shooting happened just before 6:30 a.m. Wednesday.
Ronayne Thomas, of Logan Square, was pronounced dead at 12:23 a.m.
The incident is the third of its kind in the area, but police have not yet linked it to the others.
A 27-year-old woman and 30-year-old man are still missing, according to the U.S. Coast Guard.
One woman is dead after a boat capsized while returning from Michigan Saturday night.
Juwan Williams, 18, was fatally shot on Sunday, authorities said.
The woman was in critical condition at Illinois Masonic Medical Center, police said.
Two men, both 23, were taken to Northwestern Memorial Hospital in fair condition, police said.
The violence included a shooting that wounded three people about 11:30 p.m.
Three people were killed and at least 23 more injured during a bloody Friday night.
The shooting Sunday hospitalized five children between the ages of 11 and 15.
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