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BROOMFIELD – A Broomfield home sustained significant damage Thursday afternoon after a fire broke out in the attic.Firefighters haven't determined an official cause of the fire, but they're trying to find out if lightning was involved.

Crews were able to extinguish the fire by around 2:30 p.m. It broke out at a home on Troon Circle – just north of West 136th Avenue and Lowell Boulevard.

The homeowner and her 7-year-old son were inside when the fire started. They immediately left the house and called 911 at about 1:50 p.m. They say they saw smoke near one of the windows, according to a news release from North Metro Fire.

When firefighters first arrived, they say there was heavy smoke outside the home. While extensive flames caused a portion of the roof and interior ceiling to collapse, crews say they were able to contain the fire to the attic.

A neighbor told fire crews that he heard a loud crack of thunder, and then saw smoke from the house.

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(KUSA-TV © 2014 Multimedia Holdings Corporation)

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