Prosecutors trying senior Khmer Rouge officials made their first indictment in July 2007, charging Kaing Guek Eav, known as Duch, who ran the notorious Tuol Sleng prison where some 14,000 people were tortured and killed, with crimes against humanity. In September 2007, Nuon Chea, who was second-in-command to Pol Pot, was arrested and charged with war crimes. The first trial began in February 2009 in Phnom Penh, with Kaing Guek Eav as the defendant. He was convicted him of war crimes and crimes against humanity in July 2010 and sentenced 35 years in prison. He will only spend 19 years in prison, having already served 16 years.