Hassan Sheikh Mohamud holds talks over phone with South Sudanese President Salva Kiir as well as Vice President Riek Machar, Kiir's rival

Tensions are running dangerously high after an opposition-linked militia overran an army base loyal to President Salva Kiir in South Sudan's Upper Nile state. Regional leaders should urgently press Kiir and Vice President Riek Machar,

Increased violence and political friction in South Sudan threaten its fragile peace process, a United Nations rights body said on Saturday, days after the arrests of several officials allied to the country's vice president.

A crew member was killed and two others were injured when a United Nations helicopter on an evacuation mission in a remote part of South Sudan was attacked.

Several allies of Vice President Machar arrested as soldiers surround his Juba home in latest threat to 2018 peace deal.

South Sudanese forces have arrested the petroleum minister and several senior military officials allied with First Vice President Riek Machar, Machar's spokesperson said on Wednesday, jeopardising a peace deal that ended a five-year civil war.

President William Ruto has urged South Sudan President Salva Kiir and the first Vice President Riek Machar to engage in dialogue in a bid to foster peace.

One crew member died when a UN helicopter was shot at, a statement from its mission in South Sudan (Unmiss) said. It added that an injured South Sudanese general and several other

On Friday, a South Sudanese general and dozens of soldiers were killed when a U.N. helicopter trying to evacuate them from Nasir came under attack, the government said.