One passenger was airlifted to Thomas Jefferson University Hospital with a head injury and was in critical condition Sunday afternoon. The cause of the crash was unknown.

A SEPTA spokesperson said the single-car Norristown High Speed Line train collided with a bumper at the end of the tracks at the Norristown Transportation Center.

The NTSB is investigating after a SEPTA train collision left eight passengers injured in Norristown Sunday. "I had a donor on the phone with me telling me that all the donors are lining up behind that candidate,