Freight train derails in Pennsylvania, prompting evacuations but no injuries

A freight train derailed in Whitemarsh Township, Pennsylvania, causing the precautionary evacuation of homes and businesses.
The CSX train was carrying hazardous materials, but no injuries, leaks or spills were reported.
Investigators believe weather-related issues caused the derailment on Norfolk Southern tracks.
Silicone pellets leaked from one car but were not considered a hazard.
Rail companies have faced scrutiny after previous derailments involving hazardous materials.