South Sudan’s leaders are in emergency talks after days of violence between rival factions in the capital left at least 272 people dead and stoked fears of a return to civil war, an ambassador for the oil-producing African nation said. The capital, Juba, is calm after both President Salva Kiir and Vice President Riek Machar ordered their forces to maintain a cease-fire, South Sudanese Ambassador to Kenya Chol Ajongo told reporters Tuesday in Nairobi, the Kenyan capital. Machar’s troops have been “dislodged” from their main base at Jebel and the rest of Juba following clashes with Kiir’s forces since Friday, according to Lul Ruai Koang, a spokesman for the president’s army. “They are on the run,” and the government will conduct searches for remaining fighters and assess the situation, he said by phone from the city late Monday.