Lessons revealed in 5-minute stabbing at Penn. school

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NEW YORK CITY (PIX11) — A former NYPD sergeant explains lessons that can be gleaned from a 5-minute stabbing spree allegedly carried out by a 16-year-old student at a high school near Pittsburgh.

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A 16-year-old student from Franklin Regional Senior High School in Murrsyville, Penn., is lead away in handcuffs after he allegedly went on a 5-minute stabbing rampage in a crowded high school hallway.