CHICAGO (CBS) — A DePaul University student was brutally attacked for her iPhone on a CTA Blue Line train on Thursday, and she said witnesses stood by and did nothing to help her.

Jessica Hughes, 19, was left with a black eye, bruises to her head, and a bite mark on her hand.

UPDATE: Chicago Police Release Surveillance Pictures Of Suspects

Hughes said she was riding the Blue Line just after 10 a.m., heading home to Berwyn. Most of the passengers on her car got off at the UIC-Halsted station, but one man moved to the seat in front of her, and looked her in the face, and she knew something was wrong.

“He jumps up from his chair, and goes on top of me, and asks me for my phone, but my phone was in my pocket, and I had my headphones on, so he was yanking at my headphones, and then he pushed me to the floor, and then started beating on my head,” she said. “He bit me on my left hand.”

Hughes said she was calling for help, but two other men in the car did nothing.

“They just watched,” she said. “I feel like people just don’t want to get involved.”