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

Phil Stilton is the Editor and Publisher of Shore News Network, an independent digital newsroom providing original reporting on New Jersey, national news, government, public policy, public safety, courts, and community affairs.

As founder of the publication, Stilton leads editorial strategy, investigative reporting, and daily newsroom operations while overseeing coverage that reaches millions of readers annually.

With extensive experience covering municipal government, county government, state legislatures, elections, law enforcement, emergency management, and public records, Stilton specializes in translating complex government actions into clear, factual reporting. His work frequently relies on primary source documents, including court filings, legislation, public meeting records, election finance disclosures, government databases, police reports, and Freedom of Information and Open Public Records Act (OPRA) requests. He has reported extensively on local government accountability, taxpayer spending, campaign finance, public corruption investigations, infrastructure, public safety, and the policies affecting New Jersey residents.

Under Stilton's editorial leadership, Shore News Network has grown into one of New Jersey's largest independent digital news organizations, publishing thousands of original news articles each year while providing breaking news coverage, investigative reporting, and analysis across state and local government. The publication's reporting is routinely sourced from official government agencies, public officials, court records, and firsthand documentation, with a commitment to transparency, attribution, corrections when warranted, and clearly distinguishing factual reporting from opinion.

Stilton's journalism follows established newsroom standards emphasizing accuracy, verification, fairness, and accountability. Every effort is made to verify information through official records and multiple reliable sources before publication. His reporting is intended to provide readers with timely, well-documented information that helps them understand the issues affecting their communities, while maintaining editorial independence from political parties, government agencies, advocacy organizations, and commercial interests.

Readers can submit story tips, corrections, public records, or media inquiries through the official Shore News Network website or its verified social media channels. Shore News Network welcomes corrections and updates when new information becomes available as part of its ongoing commitment to accurate and transparent journalism.