Today, Youk Chhang, director of the Documentation Center of Cambodia (DC-Cam), testified in the trial chamber of the Extraordinary Chambers in the Courts of Cambodia. The testifying will continue tomorrow. Chhang testified that many countries across various continents have played an important role in donating funds in order to research and document crimes committed during the Democratic Kampuchea regime and that the United States has been the most important contributor. Chhang, who began documenting what happened during the Democratic Kampuchea regime in 1995, made a statement that DC-Cam was not the only institution to do this kind of research and that some initiatives by other organizations had failed because the situation in Cambodia in the early 1990s was not secure enough.

France, who colonized Cambodia for nearly a century from 1863 to 1953, had not provided any funding for the documentation about the Khmer Rouge regime, according to Chhang.

When asked by the prosecutor about the sources of documents currently stored at his office, Chhang stated that all documents were collected or photocopied from the original documents. According to Chhang, the majority of original documents are housed at various government ministries, some were provided by individuals who found such documents in their homes, which were once occupied by former Khmer Rouge cadres, and almost ten thousand pages of documents were received from Sweden. Regarding the authenticity and reliability of the Khmer Rouge documents, DC-Cam director Chhang stated that the Khmer Rouge documents are easy to recognize by the public. "You do not need special skills or a PhD to inspect the documents; local people could recognize the Khmer Rouge documents because these kinds of documents were written in a different language from pre and post regime," said Youk Chhang.