Son charged for murder of mom's boyfriend

MIDDLEBOROUGH, Mass. — A Middleborough man has been arrested and charged with murder in connection with the fatal stabbing of a 66-year-old man during a domestic dispute, authorities announced Sunday.

Middleborough Police responded to multiple 911 calls around 8:03 p.m. Saturday reporting a fight and a stabbing at a residence located at 19 Fairview Street. Officers and emergency medical personnel found Paul Pomerleau suffering from multiple stab wounds. He was transported to Morton Hospital, where he was pronounced dead at 8:52 p.m.

Police identified 41-year-old Andrew Horsman as the suspect and took him into custody near the scene without incident, following witness interviews.

Key Points

Paul Pomerleau, 66, was fatally stabbed Saturday night at 19 Fairview Street
Andrew Horsman, 41, was arrested and charged with murder
Witnesses said a domestic argument preceded the stabbing

Investigators from the Massachusetts State Police assigned to the Plymouth County District Attorney’s Office joined the case and conducted interviews with witnesses who indicated the stabbing followed an argument inside the home.

Horsman was later charged with one count of murder after detectives obtained an arrest warrant.

Officials confirmed that Pomerleau had been in a long-term relationship with Horsman’s mother.

Phil Stilton Latest posts

Shore News Network Staff Report is the official newsroom byline used by Shore News Network when a story is produced through the collaborative work of multiple members of the editorial team rather than a single reporter.

This newsroom account is reserved for articles that involve contributions from multiple journalists, editors, photographers, researchers, or news desk staff. It is also used for developing stories that are updated as new verified information becomes available, as well as for community announcements, weather coverage, public safety alerts, election results, and other newsroom-produced content.

Every article published under the Shore News Network Staff Report byline is reviewed and edited in accordance with the organization's editorial standards for accuracy, fairness, attribution, and transparency. Information is verified through official government agencies, court records, law enforcement, public documents, direct reporting, interviews, and other reliable primary and secondary sources before publication whenever possible.

The Staff Report account does not use artificial intelligence to independently generate news or publish unverified information. AI-assisted tools may occasionally be used for editorial support tasks such as transcription, formatting, grammar review, or workflow efficiency, but all published content is subject to human editorial oversight and approval by Shore News Network's newsroom staff.

As an independently owned digital news organization, Shore News Network is committed to original reporting, public safety journalism, government accountability, local community coverage, and breaking news throughout New Jersey and surrounding regions. Stories published under the Staff Report byline reflect the collective experience and editorial judgment of the Shore News Network newsroom.

Readers who have corrections, additional information, or news tips related to a Staff Report article are encouraged to contact the newsroom at news@shorenewsnetwork.com. Shore News Network welcomes factual corrections and updates as part of its commitment to accurate, transparent journalism.