23-year-old Katherine Farrell was found stabbed to death at her parent's home in Saint James Monday morning.
Police believe she was killed by her ex-boyfriend James Schultz who later killed himself.
Schultz apparently picked up his 13-month-old son from Farrell, who is the boy's mother, brought him to his East Northport home, and then shot himself.
Police found the toddler in another room.
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