A woman is in the hospital in critical condition after being shot in the head late Thursday night on Interstate 55, according to officials.
Around 10:05 p.m. Thursday, state troopers responded to reports of a shooting in the inbound lanes of the Stevenson Expressway near Archer Ave. According to Illinois State Police, a woman had been shot in the head and a vehicle had crashed.
Authorities said it was an off-duty officer that called the incident in. It wasn't immediately clear, however, whether that officer was involved in the incident, or simply witnessed it.
Early Friday morning, the Civilian Office of Police Accountability -- an independent agency that typically investigates incidents involving one or more Chicago police officers -- tweeted that it was responding as well.
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The woman, in her 20s, was rushed to a nearby hospital where she was last listed in critical condition.
According to Illinois State Police, the shooting is being investigated as a possible road rage incident.
