Duch, who was in charge of the notorious S-21 prison [Wikipedia backgrounder] in Phnom Penh, is one of five top leaders of the Khmer Rouge regime [JURIST news archive; BBC backgrounder] currently in ECCC custody. He was arrested in 1999 on genocide charges and was subsequently charged with war crimes by a military court in March and with crimes against humanity [JURIST reports] by the ECCC in July. Those charges were primarily brought to keep Duch in custody while the ECCC started operations. BBC News has more. AP has additional coverage.
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