Nairobi, Feb. 9 -- The war in Sudan has spilled over to the restive border region of Abyei, potentially scuttling recent efforts to resolve the long-standing conflict between Ngok Dinka ethnic group in South Sudan and the Misseriya from West Kordofan State in Sudan.

A group of youth from Twic Mayardit, backed by forces loyal to spiritual leader Gai Machiek killed at least 37 people and wounded 36 others on February 4.

The initial attacks the previous day left 19 people dead and 18 injured, according to Koch, who also serves as the Abyei government spokesperson. The youth have also attacked the United Nations Interim Security Force for Abyei (Unisfa) base.

Read: 39 killed in South Sudan communal clashes

Abyei's Information Minister Bul...