Sudan's warring factions agreed on Monday to extend a truce for five days after renewed fierce fighting and airstrikes in parts of the capital raised doubts about the truce's effectiveness.

Saudi Arabia and the United States, which brokered the week-long cease-fire agreement and are monitoring it from afar, announced shortly before a Monday night deadline that the truce would be extended.

Although the ceasefire was not fully respected, it allowed the delivery of emergency aid to about two million people, according to a joint statement by the two countries.

"The extension will allow for further humanitarian assistance, the functioning of key services and discussion of a potential longer extension," the statement said.

Hours earlier, residents reported fighting in all three neighboring towns that make up the greater area around the capital – Khartoum, Omdurman and Bahri. As they state, the intensity of the fighting was greater than in the past three days.

Sudan's army and the paramilitary Rapid Support Force (RSF) have been in a power struggle that erupted into open conflict on April 14, killing thousands and displacing nearly 1,4 million people from their homes.