Between December 16 and 18, 2018, at least 890 people, mostly Banunus, were killed in Yumbi and three other nearby villages (Bongende, Nkolo and Camp Nbanzi) in Mai-Ndombe Province, 400 km (250 miles) north of Kinshasa.

Bongende fishing village was worst hit, with many residents mutilated and at least 339 slain.

[4] The Banunus were slaughtered by members of the Batende community in a deep-rooted rivalry over monthly tribal duties, land, fields and water resources.

[4] Military-style tactics were employed in the bloodbath, and some assailants were clothed in army uniforms.

Reports suggest the clashes started when members of the Banunu tribe wanted to bury one of their traditional chiefs on Batende land.