INVESTIGATION REPORT & LEGAL DOSSIER The Chemmani Mass Graves: Structural Enforced Disappearances, Clandestine Burials, and Legal Accountabilities in Post-Operation Riviresa Jaffna (1987–2026) Compiled by: Wimal Navaratnam Independent Researcher & Human Rights Activist Contact: tamilolicanada@gmail.com Date of Completion: October 23, 2026 ABSTRACT This comprehensive investigative report and legal dossier examines the Chemmani mass graves in the Jaffna Peninsula, Sri Lanka, detailing the structural mechanics of enforced disappearances, extrajudicial executions, and clandestine burials between 1995 and 1996 following Operation Riviresa. Focusing on the operational role of the 512 Brigade—specifically the 17 Gemunu Watch (17 GW) and 14 Gajaba Regiment (14 GR)—this report demonstrates how state security forces executed a dual-pronged counter-insurgency doctrine: combining public civil administration ("humanitarian civil affairs") with hidden, systematic state-sanctione...