In Sudan, intense airstrikes and artillery fire rattled the capital Khartoum on Sunday as fighting between the army and the paramilitary Rapid Support Forces resumed following a 24-hour ceasefire. Witnesses said at least 17 civilians were killed across the capital region. There are reports of intense fighting in several other parts of Sudan, including Darfur.

On Friday, Sudan’s Ministry of Foreign Affairs declared Volker Perthes, the U.N. envoy for Sudan, to be persona non grata, after Sudan’s army chief, Abdel Fattah al-Burhan, accused him of inflaming the conflict in Sudan. Perthes defended the U.N.’s work and said the conflict could only be blamed on “the two generals at war.”

In South Sudan, at least 20 people were killed and 50 others injured after fighting erupted in a camp for displaced people in Upper Nile state. The camp is home to at least 50,000 people, who began arriving when the civil war in South Sudan broke out a decade ago.