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Story summary
- William Michael Larsen, 37, was arrested in Florida for allegedly burning down his home and fatally stabbing a man who attempted to extinguish the fire.
- Authorities responded to the initial fire around midnight on Tuesday, and hours later, Larsen returned to ignite a shed and attacked the victim, who was his mother's long-term boyfriend.
- The Citrus County Sheriff's Office conducted a manhunt and located Larsen after discovering his abandoned truck nearby.
- Larsen faces multiple felony charges, including arson and first-degree premeditated murder, as investigators seek to determine a motive.
