Firefighters responded to the same home twice within several hours Tuesday morning.
The first fire was set at a home on Ann Street, near South High School around 11:30 p.m. Monday.
When firefighters arrived at the scene, they found the home was vacant, but on fire. It was quickly put out.
Three hours later, firefighters were called back to the same house and found it burning again.
Once they got the hot spots put out, they discovered several areas where the home appeared to have been purposefully set on fire.
Because of what they found, fire investigators are looking into the fires as possible arson.
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