A train carrying crude oil derailed on a bridge over the Schuylkill River in Philadelphia.

Police contacted the Coast Guard about 1 a.m. Monday to report that the CSX train went off the tracks on the Arsenal Bridge in the University City section of Philadelphia.

The Coast Guard said in a news release that a crew on a boat was monitoring the derailment near the bridge and another team that monitors for pollution is also at the scene.

Authorities said there was no report any of the oil has leaked from the cars.

It's not yet clear what caused the train to derail.