Fighting between the Hema community and the Lendu ethnic group in northeastern Democratic Republic of Congo has now killed at least 150 people, officials have said.
The violence has also forced more than 32 000 people to flee to Bunia, where humanitarian assistance is strained and the ones suffering are eager for improved conditions.
Another 28,000 have also fled into Uganda, the UN Office for the Co-ordination of Humanitarian Affairs has said.
Ongoing battles between Lendu and Hena groups started in 1999 and have already left thousands leading to the UN to deploy a peacekeeping force in the area.
The tensions are fueled by the economic disagreements over land as the Lendu historically have been farmers while the Hema raised animals and moved throughout the year to good grazing places.