Ao An








Photo courtesy of Documentation Center of Cambodia.


Ta An
Place of Birth
Arrested Date
Defence counsel
Mom Luch (Cambodia), Göran Sluiter (Netherlands) and Richard Rogers (United Kingdom)
Position in Democratic Kampuchea

Alleged Central Zone Deputy Secretary and Sector 41 Secretary.

Status of case

Ao An was charged with premeditated homicide and crimes against humanity on 27 March 2015. On 14 March 2016, Ao An was charged with additional alleged crimes, including genocide. On 16 December 2016, the Co-Investigating Judges concluded the judicial investigation against Ao An and the case was severed creating case file 004/02. 

Key allegations
  • Genocide of the Cham;
  • Crimes against Humanity, namely murder; extermination; enslavement; imprisonment; torture; persecution against the so-called “17 April people”, former Lon Nol soldiers, Central (Old North) Zone cadres, their families and subordinates, people from the East Zone, and other “bad elements” and “internal enemies”; persecution against Cham and Vietnamese people; and other inhumane acts including forced marriage, rape, enforced disappearances, physical abuse, forced labour, and inhumane conditions of detention;
  • Violations of the 1956 Cambodian Penal Code, namely premeditated homicide.

    These crimes were allegedly variously committed at Anlong Chrey Dam Forced Labour Site; Kok Pring Execution Site; Met Sop (Kor) Security Centre; Tuol Beng Security Centre and Execution Site and Wat Angkuonh Dei Pagoda; Wat Au Trakuon Security Centre; Wat Batheay Security Centre; Wat Phnom Pros Execution Site; Wat Ta Meak Security Centre; Chamkar Svay Chanty Security Centre; Wat Baray Chan Dek Security Centre; Wat Srenge Security Centre; and at various locations in Kampong Cham Province.
Case No. Case 004Case 004/02
[Redacted] Decision on International Co-Prosecutor’s Appeal Concerning Testimony at Trial in Closed Session D309/6
[Redacted] Considerations on Appeal Against Decision on Fifth Request for Investigative Action D260/1/1/3
Ao An’s submission on whether an attack by a state or organization against members of its ownarmed forces could qualify as a crime against humanity under Customary international law in 1975-1979 D306/3
Amicus Curiae Brief for Cases 003 and 004- Ido Rosenzweig D306/8
International Co-Prosecutor's Response to the International Co-Investigating Judge's call for Submissions Regarding Crimes Against Humanity D306/2
Amicus Curiae Brief for Cases 003 and 004- TRIAL (Track Impunity Always) D306/6
Amicus Curiae Brief for Cases 003 and 004- Oliver Windridge D306/11
Amicus Curiae Brief for Cases 003 and 004- Dr. Joanna Nicholson D306/9
International co-prosecutor’s response to the International co-investigating judge’s call for submissions regarding crimes against humanity D191/1
Amicus Curiae Brief of Professors Robinson, DeGuznam, Jalloh and Cryer on Crimes Against Humanity for Cases 003 and 004 D306/7
Amicus Curiae Brief for Cases 003 and 004- Drs WILLIAMS and GREY D306/12
AMICUS CURIAE BRIEF FOR CASES 003 AND 004 - Catherine DRUMMOND, Philippa WEBB and Dapo AKANDE D306/5
Amicus Brief Filled by the Center for International and Comparative Law, University of Baltimore School of Law on the Legality of Targeting Members of One's Own Military D306/13
Amicus Curiae Brief for Cases 003 and 004-Professor Nicholas Tsagourias D306/10
Queen's University Belfast Human Rights Centre Response to the ECCC Office of the Co-Investigating Judges "Call for Submissions by the Parties in Cases 003 and 004 and Call for Amicus Curiae Briefs" D306/14
Call For Submissions by the Parties in Cases 003 and 004 and Call for AMICUS CURIAE Briefs D306
[REDACTED] Decision Appeal Against Order on ’s Responses D193/47, D193/49, D193/51, D193/53, D193/56 and D193/60 D284/1/4
International co-prosecutor’s disclosure of documents from case file 004 relevant to case 002 pursuant to case 004-d193/28 E319/25
Decision on Appeal Against the Decision Rejecting his request for Information Concerning the Co-Investigating Judges’ Disagreement of 5 April 2013 D208/1/1/2
Decision on Appeal Against Constructive Dismissal of [Redacted] Fourth Request for Investigative Action A117/2/2
Decision on appeal against internation Co-investigating judge’s decision denying annulment motion D185/1/1/2
Decision on ’s Appeal Against International Co-investigating Judge’s Decision Denying Requests for Investigative Action D190/1/2
Decision on the Defence requests to access the Case File and take part in the Judicial Investigation D121/4
[Corrected 1] Decision on motion and supplemental brief on suspect's right to counsel D122/6