By Bria Brown

(CBS DETROIT) – There’s new information on a massive fire that damaged an iconic Mackinac Island landmark.

The Mackinac Island Fire Department says it now believes a fireplace is to blame.

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The fire quickly spread through the Brigadoon Cottage on Sunday, burning its way through the roof.

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No one was hurt, and authorities were able to save most of the structure.

Officials say the damage, which was mostly to the roof, is estimated to cost more than a million dollars.

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