Authorities responded to a report of an assault at a location in New Fairfield on Hillview Drive East at about 9:20 p.m. on Saturday, May 7, according to Connecticut State Police.
The victim, identified as 65-year-old James Knapp, was hospitalized with a stab wound to his chest, and later pronounced dead, police said.
Patrick Griffin, of New Fairfield, was also taken to the hospital and was later arrested and charged with first-degree manslaughter, authorities said.
Police said Griffin was held on $1,000,000 cash/surety bond and is set to be arraigned on Monday, May 5.
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