Crews have started containment measures after a train derailed and its lead engine began leaking diesel fuel into the Kootenai River in northern Idaho.

Boundary County sheriff deputies say three locomotives and six rail cars derailed Wednesday.

Two workers were rescued from inside the train, but no one was injured.

A BNSF Railway Company spokesman says the cause of the derailment is under investigation but it appears there was a rockslide in the area. That line is now closed to freight and Amtrak trains.