The Khmer Rouge regime doumented all inmates and a vast record now show the individuals who were interned and perished in the prison.
The Toui Sleng Genocide Museum. The Toui Sleng was a college turned into interrogation and torture centre by the Khmer Rouge during their rule in the seventies, called S21 by the Khmer Rouge. Most inmates were murdere, either they died during torture or in the Klling Fields outside Phnom Penh. An estimated 17,000 prisoners were held at the prison, called S21 by the Khmer Rouge and only 7 is believed to have survived imprissonment, the rest died either in prison or were killed in the Killing Fields.
The Toui Sleng prison was run by Kang Kek Iew, Comrade Duch, a former school teacher. On 26 July 2010, Duch was found guilty of crimes against humanity, torture, and murder; he was sentenced to 35 years' imprisonment