Sudanese Armed Forces agreed on Sunday to extend a temporary truce, which was originally set to expire at midnight local time, with their paramilitary rivals, the Rapid Support Forces (RSF), for a further 72 hours.
It is the latest of multiple truces that have largely been violated by both sides.
The army said the extension came due to "US and Saudi mediation."
The RSF earlier also said that they have agreed to extend a humanitarian truce for another three days.
"In response to international, regional and local calls, we announce the extension of the humanitarian truce for 72 hours, starting from midnight tonight," the RSF said on Twitter.
The paramilitary force said it had given its approval for the cease-fire "in order to open humanitarian corridors and facilitate the movement of citizens and residents and enable them to fulfil their needs and reach safe areas."
Clashes continued over the weekend despite the calling of a 72-hour ceasefire on Thursday, with both sides accusing the other of violating the agreement.
Sudan's de facto leader, Army chief Abdel Fattah Burhan, has been in conflict with his ex-deputy Mohammed Hamdan Dagalo, who commands the RSF.
The Sudanese Health Ministry reported more than 500 people have died in the fighting so far, which is now in its third week.
The Sudan Doctors' Syndicate, which monitors casualties in the violence, said 425 civilians were killed and 2,091 wounded.
