Selv om Kina altid har fastholdt, at landet kun ydede teknisk landbrugsrådgivning til De Røde Khmerer, fremlagde det cambodjanske center for dokumentation for nylig beviser på, at Kina var direkte indblandet i etableringen af forhørs- og torturcentre i Phnom Penh, hvor tusinder af cambodjanere døde.
Although it has always maintained that it only provided the Khmer Rouge with technical expertise in agriculture, the Cambodian documentation centre recently unearthed evidence to show that it was directly involved in the setting up of the interrogation and torture centre in Phnom Penh where thousands of Cambodians died.