A business owner with companies near where a Norfolk Southern train derailed and caught fire in February has sued the railroad for $500 million, saying most of his eastern Ohio companies have remained closed and he hasn't been able to reach a financial settlement with the railroad.

Edwin Wang filed his federal lawsuit Tuesday. It comes amid government lawsuits against Atlanta-based Norfolk Southern and a class action case on behalf of residents who have complained about the derailment's impact on East Palestine, Ohio.