President Joe Biden has been briefed on the leak and he directed his staff to provide any resources needed, a White House statement said.

An evacuation order remains in place after a railcar in Ohio began leaking styrene on Tuesday. While the leak has stopped, roads in the area are also staying closed.

Students in school buildings and residents in hundreds of neighboring homes in a Cincinnati suburb were told to evacuate after officials discovered styrene, a toxic and flammable chemical used to