This photo taken with a drone shows portions of a Norfolk Southern freight train that derailed February 3 in East Palestine, Ohio, were still on fire, February 4.
Mandatory Credit:	Gene J. Puskar/AP

This photo taken with a drone shows portions of a Norfolk Southern freight train that derailed February 3 in East Palestine, Ohio, were still on fire, February 4.
Mandatory Credit: Gene J. Puskar/AP

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EPA chief pledges to hold train company accountable over Ohio toxic train disaster as residents' frustrations grow

The head of the US Environmental Protection Agency told CNN the agency plans to hold the train company Norfolk Southern accountable as investigations continue into the derailment of a train carrying hazardous chemicals earlier this month in a small Ohio town.