Fla. teen fatally stabs mom's live-in boyfriend

SPRING HILL, Fla. (AP) -- Authorities say a 17-year-old boy fatally stabbed his mother's live-in boyfriend.

The stabbing took place during an argument at their home in Spring Hill on Sunday afternoon. Hernando County Sheriff's officials say the teen left the house after arguing with 39-year-old David Floyd. He then returned home and grabbed a kitchen knife and stabbed Floyd in the chest.

Deputies say Floyd died at a hospital Sunday evening.

The teen's name has not been released. He faces a first-degree murder charge.

No further details were immediately available.

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