Rebels occupying the eastern Democratic Republic of Congo city of Goma have declared a cease-fire but the government dismissed the pause in the fighting as a ruse aimed to head off growing international concern.

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.

Rebels from the M23 group have captured the town of Goma in the east of the Democratic Republic of Congo. The Rwandan Broadcasting Agency published a photo of the Belarusian-made Berkut-VM unmanned aerial vehicle captured by the rebels.