08/16/2014 UPDATE: Authorities say the barn is a complete loss.  They believe wet hay being stored inside may have sparked the fire.

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Firefighters from the Middleton area are on the scene of a barn fire this morning. It broke out just before 6 a.m. on Riles Road, off Highway 12, in the Town of Springfield.  

No injuries have been reported.

Authorities say it is a stubborn blaze, and apparently the roof is on the verge of collapse.

That portion of Riles has been closed to traffic.