The homeless woman accused of setting a fire that killed four Belvidere natives is found not guilty by reason of insanity.

51 year old Mary Smith told prosecutors she set the fire in the Wrigleyville apartment in Chicago to keep warm. It happened last March. Smith will now head to a mental facility for evaluation.

Jennifer Carlson, Jason Bowers, Jerod Pilgreen, and Joseph Schultz were all killed in the blaze.