Fifteen train cars went off the tracks when a freight train derailed Saturday evening in Dickerson County, Virginia.
Four of them ended up in the Russell Fork River.
According to the transportation company, C-S-X, one of the derailed cars was leaking.
It contained propionic acid, a corrosive material.
A hazardous materials team is on the scene.
The train was headed from North Carolina to Kentucky when the accident happened.
No injuries were reported.