The army of southern Sudan says more than 100 people were killed when a local tribe attacked a rival group in the southern state of Jonglei.

Gunmen from the Lou Nuer tribe attacked a village of the Dinka Hol tribe on Sunday, driving away security forces who were guarding the remote settlement, Duk Padiet.

Southern army spokesman Kuol Diem Kuol said Monday that the dead include 23 attackers, 28 security forces, and more than 50 villagers. Another 46 people were injured.

Jonglei state has experienced multiple deadly clashes involving the Lou Nuer, the Dinka Hol, and other tribes this year, often triggered by cattle raids or disputes over natural resources

The area has long been the scene of violent cattle raids between the groups. But southern Sudanese officials say northern Sudan's ruling party is organizing the attacks to spark conflict and undermine the 2005 peace deal that ended Sudan's civil war.

That deal calls for the semi-autonomous south to vote on full independence in 2011.

The National Congress Party has repeatedly denied the accusations.

The United Nations says more than 2,000 people have been killed this year and another 250,000 displaced in tribal violence in South Sudan.

Some information for this report was provided by AFP and Reuters.