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NEW CASTLE, Del. (CBS) – Seven firefighters were injured battling a house fire in New Castle, Delaware on Thursday morning.

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The fire broke out at a three-story home on Bunker Hill Road, around 6:30 a.m.

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During the fire, conditions quickly deteriorated and a floor collapsed.

A mayday was called and all crews were evacuated.

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The seven firefighters were all treated for minor injuries.