Kang Kek Iew or
Kaing Kek Iev, also
romanized as
Kaing Guek Eav (; ),
nom de guerre Comrade
Duch or
Deuch (មិត្តឌុច); or Hang Pin, (born 17 November 1942) is a war criminal and former leader in the
Khmer Rouge movement, which ruled
Democratic Kampuchea from 1975 to 1979. As the head of the government's internal security branch, he oversaw the
Tuol Sleng (S-21) prison camp where thousands were held for interrogation and torture. The first Khmer Rouge leader to be tried by the
Extraordinary Chambers in the Courts of Cambodia for the crimes of the regime, he was convicted of
crimes against humanity, murder, and
torture for his role during the
Khmer Rouge rule of Cambodia and sentenced to 30 years' imprisonment. On 2 February 2012, his sentence was extended to life imprisonment by the Extraordinary Chambers in the Courts of Cambodia.