A United Nations special tribunal says it has arrested a former police officer over his alleged involvement in the killing of thousands in the 1994 genocide in Rwanda.
About 800,000 ethnic Tutsis and Hutu moderates were killed in the genocide led by members of the majority Hutu ethnic group.
Officials of the tribunal said former police officer Fulgence Kayishema from Rwanda was arrested in South Africa in a joint operation with local authorities on Wednesday. He is accused of genocide and other crimes.
The tribunal said Kayishema allegedly orchestrated the killing of more than 2,000 Tutsis at a church in April 1994.
It said Kayishema and others used a bulldozer to destroy the church, and buried the Tutsis including women, children and elderly people.
The officials said the suspect had assumed a false identity to evade authorities.
The tribunal's chief prosecutor said the arrest shows that justice will be done no matter how long it takes.