ST. JOSEPH, Mich. -

Firefighters had to battle both flames and dangerous wind-chills after a lumber business caught fire in Berrien County.

Around 10 p.m., the blaze was reported at Home Builders Lumber in the 600 block of Ann Street in St. Joseph.

By the time firefighters got there, part of the building had already collapsed

WSBT Correspondent Mark Parren was on the scene and said he could see flames in the air miles from the blaze.

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Firefighters say a wall separating two parts of the building prevented the fire from doing even more damage.

The  cause of the fire is unclear at this time.

Firefighters say they had to be extra careful battling the flames in sub-zero temperatures. It was dangerously cold.

No one was hurt.