Kenneth Chamberlain Sr.

Kenneth Chamberlain Sr., 68, a retired Marine and 20-year Westchester County corrections officer with a chronic heart condition, was shot and killed in his own White Plains apartment on November 19, 2011, after his medical alert pendant was triggered accidentally. Chamberlain repeatedly told police through the door that he did not need help and asked them to leave; after roughly an hour, officers broke the door down, used a Taser and beanbag rounds, and then fatally shot him. A Westchester County grand jury declined to indict any officer in May 2012. The Department of Justice's Southern District of New York investigated separately and closed its inquiry in 2017 without federal charges, and a federal civil jury cleared the city and the officer of liability in 2016. No one has ever been criminally charged in Chamberlain's death.

White Plains, NY · Westchester County County

• 2011: Case opens — victim reported missing or found.
• Documented milestones (renewed investigation, media coverage, family advocacy) to be added as sourced.
• Present: case remains unresolved. No named suspect has been convicted.

• The medical alert trigger, the hour-long standoff, and the shooting, per police dashcam, stun-gun camera footage, and the medical alert company's recorded audio, later released publicly.
• A Westchester County grand jury found no reasonable cause for an indictment against any officer in May 2012, per then-District Attorney Janet DiFiore.
• Then-Westchester Public Safety Commissioner David Chong confirmed that one officer at the scene, Steven Hart, used a racial slur while outside Chamberlain's apartment, which the department said it would review.
• The U.S. Attorney's Office for the Southern District of New York closed its own federal civil rights investigation in 2017, finding insufficient evidence for prosecution.
• A federal civil jury concluded in November 2016 that the City of White Plains and the officer who shot Chamberlain were not liable for his death, in a lawsuit brought by his family.
• The City of White Plains separately agreed in 2023 to a $5 million settlement with Chamberlain's family — the largest in the city's history — resolving remaining civil claims.

• Whether Chamberlain in fact brandished a knife at officers as they entered, as police maintained, was disputed by the family's attorney, who noted the only witnesses to that specific moment were the officers themselves.
• The full content of the medical alert company's recorded audio from inside the apartment has not been comprehensively released to the public.
• What specific review or discipline, if any, Officer Hart faced for the racial slur identified by the public safety commissioner has not been made public.

• U.S. Department of Justice, Southern District of New York — “U.S. Attorney's Office Closes Investigation Into The Death Of Kenneth Chamberlain”
• Democracy Now! — “As Grand Jury Clears White Plains Police in Kenneth Chamberlain's Death, New Tape Shows Fatal Raid”
• ABC7 New York — “City of White Plains agree to $5 million settlement with family of Kenneth Chamberlain Sr.” (2023)
• Project Cold Case
• Murder Accountability Project
• NamUs