UNITED NATIONS, United States, June 21, 2026 (BSS/AFP) - The United Nations Security Council said Saturday it is concerned over the "imminent risk of mass atrocities" in Sudan as it called on paramilitary forces encircling El-Obeid to back down.

The majority-Muslim southern city, in the Kordofan region, has been under siege for several months by the Rapid Support Forces (RSF), which has been at war with the regular army since April 2023.

"The members of the Security Council expressed concern at the imminent risk of mass atrocities and demanded the RSF immediately halt its assault on El-Obeid," the Security Council said in a statement.

"Council members called on the parties to the conflict to immediately halt the fighting."

The UN has voiced fears that there could be a repeat of the atrocities committed during the October 2025 assault on the city of El-Fasher, which it said bore "hallmarks of genocide."

The UN said Friday that Pekka Haavisto, the secretary-general's special envoy for Sudan, had called rebel paramilitary forces chief Mohamed Hamdan Daglo to urge him not to attack El-Obeid.

Haavisto "underscored the need to urgently de-escalate the situation in El-Obeid and avoid any actions that may further worsen the already dire humanitarian situation and put civilian lives further at risk," said Stephane Dujarric, spokesman for UN Secretary-General Antonio Guterres.

The official said aid workers were "preparing for the potential movements of large numbers of people" fleeing the city, and that "our humanitarian colleagues are doing the responsible thing, which is getting ready for the worst while hoping for the best."

Dujarric said Haavisto was also talking to countries with influence over the warring parties to encourage dialogue and prevent the assault.

The conflict in Sudan has killed tens of thousands of people and forced more than 11 million from their homes, creating what the UN describes as the world's largest displacement and hunger crises.