SLINGER, Wis. - A spokesman for Canadian National Railway Co. says three locomotives and several railcars on a southbound train have derailed in Wisconsin.

Patrick Waldron says the derailment happened Sunday night near Highway 144 in the town of Slinger.

He says two crew members were on board. The extent of any injuries is unclear.

Local emergency officials and company officials are on scene. Waldron says it's unclear whether any materials were spilled from the railcars.

Slinger is about 35 miles northwest of Milwaukee.

Waldron says preliminary reports indicate that the southbound struck another set of cars on another train. The circumstances are under investigation.

The Washington County Sheriff's Department would only say that a "train incident" had occurred. The Springer Fire Department said it could not immediately provide any details.