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MURDOCK, Minn. - First responders are on the scene andkeeping residents away from a crash involving an anhydrous ammonia tanker truck and a train in western Minnesota.

The Swift County Sheriff's Department says the crash took place near the Koch NitrogenPlanton State Highway 12 just west of the town of Murdock around 8:30. The truck was reportedly heading north, the train was traveling east and struck the rear of the tanker trailer.

Burlington Northern spokeswoman Amy McBeth says three train crew members suffered non-life threatening injuries and the driver of the semi was also hurt. Sheriff's officials say one of injured was airlifted from the scene.

The train was headed for Kansas City. While no cars derailed because of the collision it remains on the scene.

The National Safety Council says anhydrous ammonia is a source of nitrogen fertilizer for crops and improper handling can cause severe respiratory injuries. A chemical assessment team is on the scene to monitor what is being called a small leak. While authorities say there is no imminent danger to the surrounding area, students have been moved from Murdock Elementary School to the High School in Kerkhoven.

Highway 12 is closed in both directions between MurdocK and DeGraff while the accident scene is investigated and cleaned up.