The long-awaited UN-backed trial of a former Khmer Rouge leader in Cambodia has started in the capital, Phnom Penh. The trial is the result of over a decade of negotiations.
Hundreds of people queued for hours to attend the hearing, including survivors of the Khmer Rouge's time in power and Buddhist monks, who were persecuted by the regime.
Kaing Guek Eav - better known as Duch - was the commander of a notorious prison camp and is accused of presiding over the murder and torture of at least 15,000 inmates.
Duch is the first senior Khmer Rouge figure to stand trial for the crimes of the Maoist regime, which is thought to have killed up to two million people between 1975 and 1979.
Cambodia asked the United Nations and international community to help set up a tribunal into the genocide more than a decade ago, but the process has faced delays.
Duch's testimonies may help in the trial of four leading, elderly Khmer Rouge commanders, which is due to begin later this year.
Today, tourists continue to visit the "Killing Fields" - the farmland where those who were deemed to oppose the regime's vision of an agrarian utopia were brutally executed.
The tribunal will not be able to punish the man most responsible for the holocaust - Khmer Rouge founder Pol Pot died in 1998 in a camp on the border with neighbouring Thailand.