Fire officials believe a space heater in a second-floor bedroom sparked a blaze that gutted a home in south Ark City Monday night.

Around 8 p.m., crews were called to 925 S. 2nd where they found flames showing from the upper portion of the home. There was initially some confusion about who might be still inside, but it was eventually determined all residents were out of the home, fire Lt. Chet Ranzau said.

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