A defect in a rail car axle caused the massive Ohio train wreck, investigators say

This photo taken with a drone shows portions of a Norfolk and Southern freight train that derailed Friday night in East Palestine, Ohio are still on fire at mid-day Saturday.

Gene J. Puskar / Gene J. Puskar

EAST PALESTINE, Ohio — A mechanical issue with a rail car axle caused the fiery derailment of dozens of freight cars in Ohio near the Pennsylvania state line Friday night, federal investigators announced Sunday. The smoldering tangle of cars, some carrying hazardous materials, kept an evacuation order in effect.

Michael Graham, a board member of the National Transportation Safety Board, said at a news conference that the three-member train crew received an alert about the mechanical defect “shortly before the derailment” but said the board was still working to determine which rail car experienced the issue.

About 50 cars derailed in East Palestine at about 9 p.m. Friday as a train was carrying a variety of products from Madison, Illinois, to Conway, Pennsylvania, rail operator Norfolk Southern said. No injuries to crew, residents or first responders have been reported.