Fighting could be heard in Khartoum early on Monday despite a supposed ceasefire extension and the United Nations warned of a humanitarian "breaking point" as clashes between rival military forces entered a third week.
Hundreds of people have been killed and thousands wounded since long-simmering tension between the Sudanese army and the paramilitary Rapid Support Forces (RSF) erupted into conflict on April 15.
Both sides agreed on Sunday to extend a much-violated humanitarian ceasefire that had been due to expire at midnight for a further 72 hours, in a move the RSF said was "in response to international, regional and local calls".
The army said it hoped what it called the "rebels" would abide by the deal but it believed they had intended to keep up attacks. On Monday morning, the sound of artillery, airstrikes and anti-aircraft fire was audible in the capital Khartoum.
Many fear for their lives as Sudan's two most powerful men prosecute war in a country that has faced civil wars, coups and economic hardship for decades.
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