The single gunshot caused damage to the window of the train in the 1900-block of North Western Avenue at about 2 a.m., police said.
2:10 AM riding on the CTA blue line. Shots fired at my train car pic.twitter.com/dnMjjQIdcI— 🤦🏾♂️ (@mkmixon_) January 1, 2018
The train was evacuated. No injuries were reported and no one was in custody Monday morning, police said.