CSX derailment Philadelphia Four train cars derailed on CSX tracks in Philadelphia Friday morning.
Credit: Getty Images

 

Investigators are attempting to determine what caused a freight train to derail in Philadelphia's Tioga-Nicetown section Friday morning.

 

No one was injured in the derailment, which happened about 3:30 a.m. on CSX tracks near 22nd Street and Hunting Park Avenue, CBS Philly reports.

 

The four freight train cars that ended up on their sides did not contain any hazardous materials, according to the report.