UPDATE: Boy guilty of premeditated murder in mom's death

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Boy was found guilty of premeditated murder

DOUGLAS - A 12-year-old Douglas boy has been found guilty of premeditated murder for the shooting death of his mother.

The judge said prosecutors proved the boy acted intentionally and with premeditation when he shot his mother, Sara Madrid, eight times after the two had argued about his chores.

The killing happened in early August 2008. The sentencing is set for January 23.

Because the boy was tried as a juvenile, the boy can only be held until he turns 18 years old.