BELMONT — Earl Martin Sweeney, 88, of Belmont, passed away April 19, 2026.
A lifelong public servant, he was widely respected as an influential law enforcement leader and a driving force behind modernizing police training and professional standards in New Hampshire.
Born in 1937, in the very home he would continue to own for his entire life, Earl was raised in Belmont. As a teenager he first worked the soda fountain at the local pharmacy, and later as a stringer reporter and photographer for the Concord Monitor, the Manchester Union Leader, the Laconia Evening Citizen, and the Concord News Service, and ran his own portrait photography business. He worked as a bookkeeper/office manager for Hueber Lumber Company in Belmont.
Drawn to public service over pressing safety concerns, Sweeney joined the Belmont Police Department at the age of 20. Young Officer Sweeney rose through the ranks, made sergeant in 1960, and three years later became, at the time, the youngest police chief in New Hampshire history. Famously, Sweeney was instrumental in helping to uncover a plot to assassinate President-elect John F. Kennedy by a former Belmont resident. Working together with the local postmaster, he notified the U.S. Secret Service in an effort to foil the plan. The man was brought to justice, served time, and actually returned to live in town. The scenario later was detailed in the documentary, "Kennedy’s Suicide Bomber."
Known for his steady leadership, compassion, and commitment to progress, Chief Sweeney strengthened community relationships while advocating for modernization in policing. He served the State of New Hampshire in numerous ways including as director of the Police Standards and Training Academy and assistant commissioner of the Department of Safety. During his 60+ year career he helped shape statewide police and fire training systems, accreditation standards, and key legislative reforms. Sweeney served on commissions that helped create New Hampshire’s first criminal code and advanced motor vehicle laws. He pushed for diversity leading by example in both police hiring practices as well as in enforcement culture.
Commissioner Sweeney earned undergraduate degrees from St. Anselm College in policing and a master’s degree in public administration from Norwich University. He taught criminal justice and economics at several institutions. He penned multiple publications on policing and community relations and contributed, immeasurably, to national and international law enforcement organizations focusing on highway traffic safety and in training administrators.
Commissioner Sweeney literally wrote the book on policing, authoring and co-authoring published textbooks.
Deeply committed to the community he loved and devoted to civic life, Sweeney served on the Belmont School Board and as a much-respected town moderator. In later years, he continued advising on public safety initiatives and enjoyed time with family, travel, and at classic car shows.
Sweeney was predeceased by his wife of 61 years, Faye. Commissioner Sweeney leaves behind his son, retired State Trooper Michael Earl Sweeney and his wife Billie-Jo Sweeney; daughter, Merry Sweeney Jeffreys and her husband Bart Jeffreys; four grandchildren, Patrick Michael Sweeney and his wife Shantel, Devon Elysse Sweeney, Kelin Hunter Jeffreys, and Hayley Sutton Jeffreys; and one sibling, sister Juanita Martin Lavature and her husband Del.
An unpretentious man, Earl believed in leaving a lasting, positive mark on the world around him and wanted to help shape things for the better. He supported countless organizations benefiting law enforcement survivors as well as cancer prevention and brain injury causes. Donations in his memory may be made to a charity of one’s choice.
Never wanting a fuss made over him, the family will mourn privately. However, plans are under way for establishing a scholarship for young people pursuing a career in law enforcement as a way to memorialize his indelible mark and to encourage those pursing a similar career to demonstrate integrity, responsibility, and leadership. Earl will be sorely missed by all who knew him.
There will be no calling hours.
Wilkinson-Beane-Simoneau-Paquette Funeral Home & Cremation Services/603Cremations.com, 164 Pleasant St., Laconia, is assisting the family with arrangements. For more information and to view an online memorial, visit wilkinsonbeane.com.


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