Khmer Rouge tribunal judges have expressed regret at the decision to appeal the indictment of S-21 prison chief Kaing Guek Eav (Duch), saying that it will delay his trial, which was expected to begin in late September. The co-investigating judges “remain determined to do their utmost to ensure that justice is rendered to the Cambodian people as speedily as possible”, they said in a statement Friday. The appeal was filed Thursday by co-prosecutors who said the charges were not broad enough.