Main Page | See live article | Alphabetical index S-21 was a prison camp located in Phnom Penh, Cambodia, used by the Khmer Rouge from its rise to power in 1975 to its fall in 1979. Located in Tuol Sleng, it was formerly a high school but was converted into a center for detention, torture and interrogation of prisoners. It was headed by the notorious Khang Khek Leu (aka Duch), who worked closely with Khmer Rouge leader Pol Pot. S-21 is currently a museum and memorial. See also: The Killing Fields, Democratic Kampuchea External links Killing Fields and S-21 This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.