S. Sudan says 21 dead in clash with Sudanese-backed militia

South Sudan, embroiled in a border dispute with its northern neighbour Sudan, said on Sunday at least 21 people died in two days of clashes between the South's army and Khartoum-backed rebels in the South's oil-producing Upper Nile state.

The clash, which erupted on Friday and continued into the next day, took place in Wau, near Malakal, the administrative centre of Upper Nile, a volatile area that borders Sudan and Ethiopia. (Reuters)