WEST POTTSGROVE TWP., Pa. -

Crews spent the day Monday cleaning up from a train derailment in Montgomery County.

Officials with Norfolk Southern Railroad said 11 cars derailed around 2:45 p.m. Sunday in the 700 block of West High Street in West Pottsgrove Township.

The cars are full of ballast stone, but nothing spilled.

Investigators are still trying to figure out what caused the derailment.