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‘Overwhelming evidence’ man killed wife, 3 children, before setting fire to the house, authorities say

A Massachusetts man found to have murdered his wife and three children in the last week before setting fire to their house and killing himself, officials said Tuesday.
(Edward Harvey through Boston FOX 25)

The researchers found “overwhelming evidence” that a Massachusetts mother and her three young children were murdered by their father last week before he set fire to their house and committed suicide, officials said Tuesday.

Luke Karpinski and his wife, Justine Wilbur, both 41, and their children, a set of 7-year-old twins and a 3-year-old, found dead in their Sheffield home March 13, when the fire department arrived to extinguish the fire, which seemed to be intentional.

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The researchers located evidence of an accelerant in different parts of the house, including two 20-pound propane tanks on the top floor, where Karpinksi and the children were discovered, Mass Live reported.

“This investigation is complex and ongoing, but we have discovered overwhelming evidence that suggests that Luke Karpinski killed his wife and children prior to committing suicide,” district Attorney Andrea Harrington said.

Wilbur, whose body was found separated from her children and Karpinski, showed signs of a “trauma” that occurred before the fire was set, Harrington said. The police has found no evidence of the weapons in the house, ” she said.

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The Berkshire Eagle, referring to an unnamed source, reported Saturday that Karpinksi may have stabbed his family to death before the start of the fire.

The authorities have not confirmed that the family is the cause of the deaths. Autopsy results for the couple and their children were pending as the investigation continues.

The researchers have not disclosed a possible motive for the killings.

The Associated Press contributed to this report.

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