Overview
- John Sweeney, 69, died at HMP Whitemoor on August 14, 2026, and The Times reported the cause as cancer while official findings are still outstanding.
- He was convicted at the Old Bailey in 2011 and given a whole‑life tariff for the murders of former girlfriends Paula Fields and Melissa Halstead.
- Prosecutors said Sweeney dismembered the victims and dumped parts in canals in London and Rotterdam, and key remains such as heads and hands have never been recovered.
- A surviving victim, Delia Balmer, was attacked by Sweeney in 1994, later wrote a memoir about the ordeal, and that book was adapted into ITV’s 2024 miniseries Until I Kill You.
- The Prison Service confirmed the Ombudsman is investigating the death as standard procedure and police remain actively on the case while families and investigators wait for further forensic and investigative updates.