Three locomotives and several wagons on a southbound train have derailed in the US.
The derailment happened on Sunday night (local time) in the town of Springer, Wisconsin, a spokesman for Canadian National Railway Co. said.
Two crew members were on board. The extent of any injuries was unclear.
Local emergency officials and company officials were on the scene, but the spokesman said it was unclear whether any materials spilled from the railcars.
Springer is about 56 kilometres northwest of Milwaukee.
Preliminary reports indicated the train struck another.