Updated

Amtrak says a train carrying 117 passengers has partially derailed in northeastern Montana, causing minor injuries to one passenger.

Amtrak spokesman Marc Magliari says three cars on the 13-car Empire Builder slipped off the tracks at a switch Monday afternoon near Bainville.

The passenger train was headed west from Chicago to Portland and Seattle. Magliari says the injured passenger is being treated at the scene.

Magliari says the train is upright and still has power, and it's expected to resume its journey Monday night after the three cars are uncoupled.

The Montana Department of Transportation says Montana Highway 327 is closed near the accident and a detour has been set up.