Two top Khmer Rouge leaders have been jailed for life for committing crimes against humanity.
Cambodia's UN-backed tribunal passed the order on Thursday, reports BBC.
The convicted are Nuon Chea and Khieu Samphan.
Nuon Chea served as leader Pol Pot's deputy and Khieu Samphan was the Maoist regime's head of state.
They are the first top-level leaders to be held accountable for its crimes.
Judge Nil Nonn said the men were guilty of "extermination encompassing murder, political persecution, and other inhumane acts comprising forced transfer, enforced disappearances and attacks against human dignity''.
Lawyers for the pair said they would appeal against the ruling.
"It is unjust for my client. He did not know or commit many of these crimes," Son Arun, a lawyer for Nuon Chea, told journalists.
They will remain in detention while this takes place.
Up to two million people are thought to have died under the 1975-79 Khmer Rouge regime.