Machete-wielding attackers descended on Esther Nzale's village in northeastern Congo eight days ago around noon, setting houses on fire and hacking to death her husband and others.

"Some people were burned alive inside the houses," Nzale said from a camp for displaced persons more than 12 km (8 miles) away. "They killed people with machetes and we don't even know what they did with the bodies."

Nzale comes from Kpatsi, one of the villages inhabited by Hema herders that was attacked last week by armed men believed to belong to the rival Lendu farming community.