The Port St. Lucie Police Department says 30-year-old Richard Caldwell was arrested Saturday and charged with arson and burglary.
The police said in a news release that Caldwell was involved in a dispute with the victim at a bar before she left with friends to go home. The woman found Caldwell inside her house, asked him to leave, and he said "you're going to regret this," while holding a bottle with lighter fluid. The victim left and returned to find her home engulfed in flames.
Caldwell returned, and a K-9 trained dog detected fire accelerants on his shoes and in his vehicle.
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