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The Contra Costa County Fire Protection District said on its social media account that three of the four adult persons and one of the dogs first escaped the second-alarm fire, and were uninjured.
MORE: 2 injured, 7 displaced after 3-alarm fire in SF with partial floor collapse, officials say
The remaining person and dog were later rescued by fire crews and were transported for evaluation, it added.
The cause of the blaze is under investigation.
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