ACTON (AP) — A Massachusetts man authorities say used scissors to stab his parents and girlfriend is now facing a murder charge after the death of his father.

Middlesex District Attorney Marian Ryan said Wednesday that 25-year-old Benjamin DiCristina was charged with murder after his father, 57-year-old John DiCristina died Sunday.

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Benjamin DiCristina is being held without bail after pleading not guilty to charges including armed assault with intent to murder.

Benjamin DiCristina appears in court on October 5, 2018. (WBZ-TV)

Prosecutors say Benjamin DiCristina was choking his girlfriend last Thursday in the family’s Acton home and his parents came to her aid.

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He has been ordered to undergo a mental health evaluation.

His defense says he has a history of mental health issues.

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