The U.N. children’s fund is accusing armed men, likely on both sides of the conflict in eastern Congo, of raping scores of children over the past weeks as rebels expand their footprint and push government forces out.

Congo’s government has described the unilateral ceasefire declared by Rwanda-backed rebels in eastern Congo as “false communication,” while the United Nations on Tuesday noted reports of heavy fighting with Congolese forces in the region.

Panic is spreading in Goma in eastern Congo as M23 rebels encircle the city, battling Congo’s army.

A Congolese government spokesman says President Felix Tshisekedi will meet with his Rwandan counterpart Paul Kagame in Angola amid rising tensions between the two neighboring countries.