Authorities say four train cars derailed near North Mermon Avenue and East Mill Street.
One of the cars was said to be leaking a plastic-like substance.
No injuries have been reported.
Train derailment under investigation in Carbon Co.
Officials at the scene say one of the axles came loose from the railroad track as the train was traveling eastbound.
Nearby Panther Valley Elementary School will be closed on Monday because the derailment is impacting traffic.