A view of the scene Feb. 24, 2023, as the cleanup continues at the site of of a Norfolk Southern freight train derailment that happened on Feb. 3 in East Palestine, Ohio. Pennsylvania Gov. Josh Shapiro said Monday, March 6, 2023 that Norfolk Southern has pledged several million dollars to cover the cost of the response and recovery in Pennsylvania after last month’s derailment of a train carrying toxic chemicals just across the border in Ohio. (AP Photo/Matt Freed, file)

OMAHA, Neb. (AP) — Federal investigators have announced a special investigation into railroad Norfolk Southern. The move follows a fiery derailment on the Ohio-Pennsylvania border in February and several other accidents. The most recent accident led to a train conductor’s death early Tuesday. The National Transportation Safety Board says it will begin a broad look at the railroad’s safety culture. It says it has sent investigation teams to look into five significant accidents involving Norfolk Southern since December 2021. The agency also says it was urging the company to take immediate action to review and assess its safety practices.