BRAINERD  (AP) - Burlington Northern Santa Fe Railway is working Monday to clear a main track near Brainerd where 18 cars in a coal train derailed.

The derailment left some of the coal cars on their sides. No injuries have been reported.

Officials say the train, on its way to Superior, Wis., had 121 loaded cars and three locomotives. One car typically carries 116 tons of coal. The derailment, east of the Brainerd Lakes Regional Airport, has blocked a main track. BNSF spokeswoman Amy McBeth says it will result in delays for railroad, so crews are working as quickly as possible to clear the tracks.

McBeth says it's too early to say what caused the derailment.

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