On 31 July 2007, Duch was formally charged with war crimes and crimes against humanity and detained by Cambodia's United Nations-backed Extraordinary Chambers in the Courts of Cambodia. Duch, represented by Cambodian lawyer Kar Savuth and French lawyer François Roux, appealed against his provisional detention by the Extraordinary Chambers in the Courts of Cambodia based on the more than eight years he spent without trial in Cambodian military detention. The appeal was unsuccessful and on 14 August 2008, the tribunal issued its indictment after completing their investigation of Duch.