A firefighter was treated for heat exhaustion after fighting a blaze at a lumber company in Vilas County.
According to the Vilas County Sheriff's Department, the fire was reported just after 3:00 p.m. at Pukall's Lumber Company. Officers say the fire was in a building behind the company's main office.
The cause of the fire is unknown, officers said. The investigation is underway.
One firefighter was treated for heat exhaustion, but has since been released, according to the Arbor Vitae assistant fire chief.
The Vilas County Sheriff's Department reports "heavy damage" to the building.