Quincy, Mass. Mother Not Guilty of Son's Death by Insanity

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    Li Rong Zhang's son died after being locked in a room with an active wok, emitting poisonous carbon monoxide. (Published Thursday, Feb. 20, 2014)

    (NECN) - A Quincy, Mass. mother has been found not guilty by reason of insanity in the murder of her son.
    In a jury waived-trial, a judge Tuesday found "Li Rong Zhang" lacked criminal responsibility at the time, exhibiting psychotic depression and paranoid delusions.

         Her 8-year-old son was found dead, locked in the master bedroom of their home in 2011.
    In the room was a wok filled with charcoal briquettes burning, emitting poisonous carbon monoxide.