GRANTSBURG, Wis. — Crews from eight fire departments were called in to battle a blaze at a dairy cooperative that is one of Burnett County's largest employers and is a popular stop for tourists in western Wisconsin.

Sheriff's officials said the fire at Burnett Dairy Cooperative was reported about 10:30 p.m. Monday. Employees working in the cooperative located near Grantsburg, were able to make it out safely. Officials say it appears the fire was the result of a mechanical malfunction, officials said.

The fire was still burning, but under control by Tuesday morning. No injuries were reported.

The Wisconsin Department of Transportation temporarily closed Highway 70 near Grantsburg.

Firefighters from Grantsburg, Siren, Webster, Frederic, Cushing, St. Croix Hertel, Pine City and Rush City all helped in the battle to save the cooperative.