It was a typically busy Thursday morning rush at the CTA’s Blue Line Western Avenue station.
But in the confusion, witnesses say they saw a man attack a woman as she got off the train and tried to make her way to the stairs.
"It was a harassment thing," said Kiola Milan, whose son witnessed the incident. "A gentleman was trying to talk to this young girl. She was ignoring him and he was pressing on. Another gentleman tried to defend her and that’s when she was pushed over the edge.
The woman fell onto the tracks and suffered minor injuries.
Police say surveillance cameras on board the train captured images of the suspect before the attack.
"It just makes me sad to think that our society has devolved into these kinds of actions," said CTA rider Mike Martin. "If people don’t like each other, you disagree with somebody, there is no need to touch anybody or assault anybody."
The police description is generic except for one factor. The suspect is between 30 and 50 years old, wearing dark pants and a parka, but witnesses say he was wearing mismatched gym shoes.
Police say it is safest to pull out your headphones and remain aware of your surroundings.
"I watch everywhere I got to go, watch my surroundings," said commuter Marcel Williams. "So you got to keep your head up when you are out here in the city."