It started as a fight among a group of minors on a train near Logan Station on Saturday night. As a result of this, one person was stabbed.
The victim was transported to a nearby hospital with non-life-threatening injuries, according to police. Police have not released the victim's identity.
SEPTA is now working with the Philadelphia Police Department to identify those involved.
There's no word yet if any charges will be filed or what may have started the fight.