In Michigan, a train operated by Norfolk Southern derailed on Thursday in Van Buren Township, 30 miles west of Detroit, causing more than two dozen rail cars to pile up and triggering fears of a toxic release. Local authorities reported one rail car contained liquid chlorine, a highly corrosive chemical. Norfolk Southern said no hazardous materials spilled.

The crash came as Environmental Protection Agency Administrator Michael Regan visited East Palestine, Ohio, to meet with residents affected by this month’s crash of a Norfolk Southern train carrying vinyl chloride and other toxic and carcinogenic chemicals, which were released in a so-called controlled burn that sent a toxic mushroom cloud high into the air.