UN Secretary-General Ban Ki-moon Wednesday expressed deep concern about the dire humanitarian situation across South Sudan.
He also called on the parties concerned to immediately cease military operations and find a peaceful resolution to the conflict, xinhua reported.
In a statement issued here by his spokesperson, Ban strongly condemned the recent killing of five South Sudanese employees of humanitarian non-governmental organisations in Maban county of Upper Nile state.
Since Monday, when five South Sudanese humanitarian workers of Nuer ethnicity were killed by a community-based self-defence militia calling itself the Mabanese Defence Forces, Maban county has been the site of clashes between the Mabanese Defence Forces and soldiers from the Sudan People's Liberation Army( SPLA).