UPDATE: The Ontonagon Sheriff's Office has spoken with the homeowner, who was not in the residence at the time of the fire. He left for Louisiana on Saturday.
The cause of a house fire in Ontonagon is under investigation.
The Ontonagon County Sheriff's Department says the structure fire was called in at 1:23 a.m. Monday. Crews rushed to 462 Minnesota Avenue to battle the blaze. Reports of explosions in the home were not natural gas related, but nearby homes were evacuated as a precaution. The Fire Marshall will be on the scene Monday to determine the cause of the fire.