The rebels continued advances in eastern Congo despite their own announcement of a cease-fire. The U.N. secretary-general called for them to lay down their guns and agree to mediation.

The group has made dramatic advances in Congo’s North Kivu province since re-emerging as a force in late 2021. It has repeatedly denied receiving support from Rwanda. And the government in Kigali equivocates about its support for the rebels.

Rwanda-backed rebels gained ground in eastern Congo on Wednesday despite the unilateral ceasefire they declared earlier this week, taking control of a town 100 kilometers (60 miles) from the provincial capital of Bukavu,