Congo has severed diplomatic ties with Rwanda as fighting between Rwanda-backed rebels and government forces rages around the key eastern city of Goma.

Residents in eastern Congo’s largest city, Goma, woke up on Monday morning afraid and uncertain about who was in control of the area after Rwanda-backed rebels claimed to have captured the city, as their fight with Congolese security forces escalated in recent days in one of Africa’s longest wars.

Rwandan-backed rebels moved to tighten their grip on the strategic city of Goma in the east of the Democratic Republic of Congo on Monday in what Kinshasa described as “a declaration of war” by its neighbour.