Negotiations between the United Nations (UN) and the Cambodian government are initiated.
Kaing Guak Eav, alias Duch, is arrested and taken into custody by the Cambodian Military court. He is transferred to the jurisdiction of the Extraordinary Chambers in the Courts of Cambodia (ECCC) on July 31, 2007.
The Agreement between the UN and the Government of Cambodia to establish the ECCC comes into force.
September 19, 2007
Nuon Chea is arrested.
November 12, 2007
Ieng Sary and Ieng Thirith are arrested.
November 19, 2007
Khieu Samphan is arrested.
February 17, 2009
Kaing Guak Eav trial (Case 001) begins.
September 7, 2009
Official investigations regarding Cases 003 and 004 are requested.
July 26, 2010
Kaing Guak Eav is found guilty of crimes against humanity and war crimes and sentenced to 35 years in prison. His sentence is later increased to life in prison by the appellate court.
June 27, 2011
Initial hearing is held in Case 002 with all four accused.
November 17, 2011
Ieng Thirith, an accused in Case 002, is determined unfit to stand trial because of age-related dementia.
November 21, 2011
Opening statements begin in Case 002/01. The trial covers charges relating to atrocities committed during the evacuation of Cambodian cities and towns in 1975 and the executions of civil servants and military officers from the former regime.
March 14, 2013
Ieng Sary, an accused in Case 002, dies of old age mid-trial.
Case 002/01 trial is completed and deliberations on judgment begin.
August 7, 2014
Nuon Chea and Khieu Samphan are found guilty of crimes against humanity, including executions of former regime loyalists after the fall of Phnom Penh in April 1975, and the forced evacuation of the civilian population of the capital, which led to the deaths of tens of thousands of civilians. They are both sentenced to life imprisonment.
October 17, 2015
Opening statements begin in Case 002/02. The trial covers genocide charges against the Cham Muslims and Vietnamese; forced marriages, rape, torture, and executions at security centers; internal purges of the regime; and torture, murder, and abuses at forced worksites and cooperatives.
March 3, 2015
The international investigating judge at the ECCC issues charges against Meas Muth in Case 003, the former Khmer Rouge naval commander, and Im Chaem in Case 004, who was senior regional commander.
March 27, 2015
Ao An is charged with premeditated homicide and crimes against humanity in Case 004. On March 16, 2016, he is charged with additional alleged crimes, including genocide.
December 9, 2015
Yim Tith makes his initial appearance at the ECCC, where he was formally charged in Case 004 with crimes against humanity, genocide, and other crimes.
November 23, 2016
The Supreme Court Chamber at the ECCC will announce its decision in the appeal of Case 002/01.