Fergus Falls firefighters put out blaze at construction trailer

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FERGUS FALLS (Valley News Live) -- The Fergus Falls Fire Department battled sub-zero temperatures to put out a construction trailer fire Friday.

The trailer, engulfed in flames when firefighters arrived, contained two 100-pound propane cylinders.

Firefighters cooled the tanks and extinguished the trailer fire in 10 minutes, but one of the propane tanks continued to burn off due to a leak.

Fire crews remained on the scene for 90 minutes while the propane burned.

Officials said the fire likely was caused by a heating unit.