A New Hampshire man who killed his father by plunging a butcher knife into his head, face and back more than 20 times — fatally penetrating his brain — is now accused of abusing and strangling his mother , according to police.

Ian Delmore, 40, is charged with "assault – domestic violence – strangulation" and "domestic violence – simple assault" in connection with the alleged attack and abuse, according to local NBC affiliate WBTS .

Delmore's mother called police and reportedly told them that she had been assaulted by him and was in fear for her life, cops say. Officers responded and took Delmore into custody after speaking with his mom.

Evidence compiled during an investigation later led to the charges.

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