Keene, NH – The Cheshire County Sheriff’s Office announced the passing of Deputy Mark Chamberlain on Sunday, December 21, 2025, according to a social media post shared by the department. The agency updated its profile image to display a mourning badge honoring Chamberlain, marking his End of Watch (EOW) on that date.
According to the Sheriff’s Office, the department and local community are mourning the loss of the veteran deputy. Officials have not yet released details surrounding the cause or circumstances of his death as of Sunday evening.
Deputy Chamberlain served with the Cheshire County Sheriff’s Office, which provides law enforcement coverage across southwestern New Hampshire, including Keene and surrounding towns. Regional law enforcement agencies and residents have begun posting tributes and offering condolences to his family and colleagues.
Funeral and memorial details are expected to be announced in the coming days.
Community members have expressed gratitude for Deputy Chamberlain’s service and dedication to protecting Cheshire County.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
Follow us on Instagram & Facebook for more relevant news stories and SUPPORT LOCAL INDEPENDENT NEWS! Have a tip? Message us!
