The Tuol Sleng Genocide Museum is a museum in Phnom Penh, the capital ofCambodia. The site is a former high school which was used as the notoriousSecurity Prison 21 (S-21) by the Khmer Rouge communist regime from its rise to power in 1975 to its fall in 1979. Tuol Sleng (Khmer [tuəl slaeŋ]) means "Hill of the Poisonous Trees" or "Strychnine Hill".
Formerly the Chao Ponhea Yat High School, named after a Royal ancestor of King Norodom Sihanouk, the five buildings of the complex were converted in August 1975, four months after the Khmer Rouge won the civil war, into a prison and interrogation center. The Khmer Rouge renamed the complex "Security Prison 21" (S-21) and construction began to adapt the prison to the inmates: the buildings were enclosed in electrified barbed wire, the classrooms converted into tiny prison and torture chambers, and all windows were covered with iron bars and barbed wire to prevent escapes.
From 1975 to 1979, an estimated 17,000 people were imprisoned at Tuol Sleng (some estimates suggest a number as high as 20,000, although the real number is unknown). At any one time, the prison held between 1,000–1,500 prisoners. They were repeatedly tortured and coerced into naming family members and close associates, who were in turn arrested, tortured and killed. In the early months of S-21's existence, most of the victims were from the previous Lon Nol regime and included soldiers, government officials, as well as academics, doctors, teachers, students, factory workers, monks, engineers, etc. Later, the party leadership's paranoia turned on its own ranks and purges throughout the country saw thousands of party activists and their families brought to Tuol Sleng and murdered. Those arrested included some of the highest ranking communist politicians such as Khoy Thoun, Vorn Vet and Hu Nim. Although the official reason for their arrest was "espionage", these men may have been viewed by Khmer Rouge leader Pol Potas potential leaders of a coup against him. Prisoners' families were often brought en masse to be interrogated and later murdered at the Choeung Ek extermination center.
In 1979, the prison was uncovered by the invading Vietnamese army. In 1980, the prison was reopened by the government of the People's Republic of Kampuchea as a historical museum memorializing the actions of the Khmer Rouge regime.
The museum is open to the public, and receives an average of 500 visitors every day.
Upon arrival at the prison, prisoners were photographed and required to give detailed autobiographies, beginning with their childhood and ending with their arrest. After that, they were forced to strip to their underwear, and their possessions were confiscated. The prisoners were then taken to their cells. Those taken to the smaller cells were shackled to the walls or the concrete floor. Those who were held in the large mass cells were collectively shackled to long pieces of iron bar. The shackles were fixed to alternating bars; the prisoners slept with their heads in opposite directions. They slept on the floor without mats, mosquito nets, or blankets. They were forbidden to talk to each other.
The day in the prison began at 4:30 a.m. when prisoners were ordered to strip for inspection. The guards checked to see if the shackles were loose or if the prisoners had hidden objects they could use to commit suicide. Over the years, several prisoners managed to kill themselves, so the guards were very careful in checking the shackles and cells. The prisoners received four small spoonfuls of rice porridge and watery soup of leaves twice a day. Drinking water without asking the guards for permission resulted in serious beatings. The inmates were hosed down every four days.
The prison had very strict regulations, and severe beatings were inflicted upon any prisoner who tried to disobey. Almost every action had to be approved by one of the prison's guards. They were sometimes forced to eat human feces and drink human urine. The unhygienic living conditions in the prison caused skin diseases, lice, rashes, ringworm and other ailments. The prison's medical staffs were untrained and offered treatment only to sustain prisoners’ lives after they had been injured during interrogation. When prisoners were taken from one place to another for interrogation, their faces were covered. Guards and prisoners were not allowed to converse. Moreover, within the prison, people who were in different groups were not allowed to have contact with one another.
Most prisoners at S-21 were held there for two to three months. However, several high-ranking Khmer Rouge cadres were held longer. Within two or three days after they were brought to S-21, all prisoners were taken for interrogation. The torture system at Tuol Sleng was designed to make prisoners confess to whatever crimes they were charged with by their captors. Prisoners were routinely beaten and tortured with electric shocks, searing hot metal instruments and hanging, as well as through the use of various other devices. Some prisoners were cut with knives or suffocated with plastic bags. Other methods for generating confessions included pulling out fingernails while pouring alcohol on the wounds, holding prisoners’ heads under water, and the use of the waterboarding technique (see picture). Females were sometimes raped by the interrogators, even though sexual abuse was against Democratic Kampuchea (DK) policy. The perpetrators who were found out were executed. Although many prisoners died from this kind of abuse, killing them outright was discouraged, since the Khmer Rouge needed their confessions. The "Medical Unit" at Tuol Sleng, however, did kill at least 100 prisoners by bleeding them to death.
In their confessions, the prisoners were asked to describe their personal background. If they were party members, they had to say when they joined the revolution and describe their work assignments in DK. Then the prisoners would relate their supposed treasonous activities in chronological order. The third section of the confession text described prisoners’ thwarted conspiracies and supposed treasonous conversations. At the end, the confessions would list a string of traitors who were the prisoners’ friends, colleagues, or acquaintances. Some lists contained over a hundred names. People whose names were in the confession list were often called in for interrogation.
Typical confessions ran into thousands of words in which the prisoner would interweave true events in their lives with imaginary accounts of their espionage activities for the CIA, the KGB, orVietnam. The confession of Hu Nim ended with the words "I am not a human being, I'm an animal". A young Englishman named John Dawson Dewhirst who was arrested in August 1978 claimed to have joined the CIA at age 12 upon his father receiving a substantial bribe from a work colleague, also an agent. Physical torture was combined with sleep deprivation and deliberate neglect of the prisoners. The torture implements are on display in the museum. It is believed that the vast majority of prisoners were innocent of the charges against them and that the torture produced false confessions.
For the first year of S-21’s existence, corpses were buried near the prison. However, by the end of 1979, cadres ran out of burial spaces, the prisoner and their family were taken to the Choeung Ekextermination centre, fifteen kilometers from Phnom Penh. There, they were killed by being battered with iron bars, pickaxes, machetes and many other makeshift weapons owing to the scarcity, and subsequent price of ammunition. After the prisoners were executed, the soldiers who had accompanied them from S-21 buried them in graves that held as few as 6 and as many as 100 bodies.