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WOBURN, Mass. (AP) — A jury has rejected an insanity defense and convicted a Burlington man of killing his longtime girlfriend in her home, a slaying witnessed by a friend of the woman's teenage daughter who was video chatting with the girl.
Christopher Piantedosi was convicted Monday of first-degree murder for the May 2012 stabbing death of Kristen Pulisciano.
Prosecutors say the 40-year-old Piantedosi stabbed Pulisciano more than 30 times because he was angry she wanted to end their relationship.
Authorites say minutes after the stabbing, Piantedosi texted a friend with what he had done. He then threw away his bloody clothes and changed into clean clothes, which prosecutors say showed he was fully aware of his actions.
The defense said Piantedosi has a history of mental illness and was under the influence of prescription drugs.
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