Duluth, MN (NNCNOW.com) - Duluth fire crews scrambled to the scene of a fire on Park Point Tuesday afternoon.
When fire fighters arrived, they found smoke coming from the roof of the Army Corps of Engineers' building on the bayside of Lake Avenue.
A chainsaw was used to open the roof and the crews knocked the fire down quickly after that.
One of the department's deputy chief's said the hardest part of the battle was dealing with cold temperatures and stiff winter winds.
"It is tough. They have good training and gear and we implement different procedures for winter fire fighting when it gets below zero like this to ensure our equipment continues to operate," said Deputy Chief Charlie Smith.
Deputy Chief Smith says the cause of the fire is unknown right now but the fire marshal is investigating.
Damage was minimal and no one was injured.