Соответствующая норма
Practice Relating to Rule 100. Fair Trial Guarantees
Section K. Public proceedings
Cambodia’s Law on the Establishment of the ECCC (2001), as amended in 2004, provides in its chapter on the proceedings of the Extraordinary Chambers:
Trials shall be public and open to representatives of foreign States, of the Secretary-General of the United Nations, of the media and of national and international non-government organizations unless in exceptional circumstances the Extraordinary Chambers decide to close the proceedings for good cause in accordance with existing procedures in force where publicity would prejudice the interests of justice. 
Cambodia, Law on the Establishment of the ECCC, 2001, as amended in 2004, Article 34 new.