Dec 31- Most of a small North Dakota town has been evacuated after a train carrying crude oil crashed into another train that had derailed, officials said on Tuesday.

Cass County Sheriff Paul Laney told CNN that 10 to 12 cars of the 106-car BNSF Railway Co oil train were still burning about a mile (1.6 km) west of the town of Casselton. No injuries were reported.

About 65 percent of the 2,300 residents left under a non-mandatory evacuation, Laney said, adding that local authorities had carried out drills for such emergencies.

"The main areas that are real hot areas that we were worried about are pretty well empty," he said.

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