By Mary Chappell

CHICAGO (CBS) — Authorities are investigating two shootings that took place early Tuesday morning on I-57 near 111th and 127th streets.

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State troopers responded to I-57 southbound near 111th after a shooting occurred at about 2:10 a.m., according to Illinois State Police. Initial reports indicate a person from an unknown vehicle shot at another vehicle, driven by a 23-year-old man from Markham who wasn’t hurt by the gunshots. His passenger, a 27-year-old woman from Markham, was taken to the hospital with nonlife-threatening injuries.

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Just hours later at about 5:30 a.m., someone shot at a 52-year-old Chicago man’s vehicle in the southbound lanes of I-57 near 127th Street. He wasn’t injured, police said.

Both incidents are under investigation.

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Illinois State Police ask anyone who witnessed the shooting or who has any knowledge of the shooting to call (847) 294-4400, or email ISP.CrimeTips@Illinois.gov. Witnesses can remain anonymous.

CBS 2 Chicago Staff