No one was in custody Saturday night for either shooting.
The latest shooting happened at about 6:30 p.m. near 127th Street in Calumet Park. Police said one female driver suffered a graze wound and refused treatment. Preliminary reports indicated the shots were fired from a black vehicle with multiple occupants.
RELATED: Postal worker fatally shot on I-57 near Oak Forest ID'd as Tamara Clayton
Four vehicles were shot at, but it was immediately unknown if the drivers or passengers were targets or caught in crossfire. The driver of one of those vehicles stopped on Marshfield Avenue. That SUV had been hit six times, shattering its back window.
I-57 northbound between 127th and Sibley Boulevard was temporarily shut down late Saturday for further investigation.
The first shooting occurred at 1 a.m. Saturday near the 111th Street exit on Chicago's Far South Side.
Shootout temporarily shuts down I-57
A 19-year-old Urbana man sustained non-life-threatening injuries and hospitalized in stable condition. His 19-year-old passenger was not injured.
The events surrounding the shooting remain under investigation.
The southbound lanes of traffic on I-57 at 111th Street were temporarily shut down for the investigation. All lanes reopened at approximately 3:50 a.m.
Anyone who witnessed the shooting or has any knowledge of the shooting is asked to contact the ISP at 847-294-4400. Callers can remain anonymous.
Last month, postal worker Tamara Clayton was fatally shot while driving on I-57 near Oak Forest. That shooting remains unsolved.