Prosecutors have been outlining the charges against Duch (centre)
Court officials have finally started to outline the case against a former Khmer Rouge leader in Cambodia.
After months of pre-trial hearings, the former prison chief known as Comrade Duch listened while a court official read out the charges against him.
He is accused of crimes against humanity, torture and premeditated murder for his alleged role in the deaths of more than 10,000 people.
The Khmer Rouge killed up to two million people in less than four years.
The UN-backed trial first opened in Phnom Penh last month, but this is the first day that proceedings have properly got under way.
Duch, whose really name is Kaing Guek Eav, is the first Khmer Rouge leader to face the tribunal - with four more of the regime's senior figures in custody and awaiting trial.
He is the only one who has admitted his part in the atrocities and asked for forgiveness from his victims. Duch cuts an unassuming figure these days, according to the BBC correspondent at the tribunal, Guy De Launey.
WHO WERE THE KHMER ROUGE?
Maoist regime that ruled Cambodia from 1975-1979
Founded and led by Pol Pot, who died in 1998
Abolished religion, schools and currency in a bid to create agrarian utopia
Up to two million people thought to have died from starvation, overwork or execution
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