The authorities in the Democratic Republic of Congo say they have arrested a militia leader who is one of the main suspects in the murder of two United Nations experts.
The Congolese military says it had been searching for Trésor Mputu Kankonde for three years.
A US national, Michael Sharp, and a Chilean-born Swede, Zaida Catalan, were murdered in 2017 as they investigated human rights abuses in the Kasai Region, where the army was fighting rebels.
The Congolese government denied that it was responsible for dozens of mass graves that were found.
It blamed the militia for the atrocities, including the murder of the UN experts.