Sudan's paramilitary Rapid Support Forces (RSF) has agreed to a proposal from the US for a humanitarian ceasefire, the group said on Thursday.

Sudan's military-led government has not yet responded. The RSF issued the statement after seizing the city of el-Fasher in the western Darfur region.

Their 18-month siege blocked humanitarian aid despite repeated UN appeals, causing starvation among residents unable to flee. A UN-backed global hunger monitor has confirmed famine conditions in the city.

The RSF has been facing an international backlash over reports of mass killings by its foot soldiers, which it has denied. But it has admitted "violations" were committed by individuals and arrested some.

Civil war broke out between Sudan's army and the RSF in April 2023. Both parties have agreed to various ceasefire proposals during the war, though none have stuck.

In September, the US along with the United Arab Emirates, Saudi Arabia and Egypt proposed a three-month humanitarian truce, followed by a permanent ceasefire and a transition to civilian rule.

The RSF's statement said it had agreed to enter the truce proposed by the four countries "in order to address the catastrophic humanitarian consequences of the war" and to allow the "urgent delivery" of aid.

The group also said it looked forward to discussions about ending hostilities "in a manner that addresses the root causes of the conflicts" and "creates the appropriate environment for a just, comprehensive, and lasting peace".