Congolese rebels and allied Rwandan forces entered the outskirts of Goma on Sunday and the airport in the key eastern city was no longer in use, the top UN official in the country said. Thousands fled the fighting that also killed at least 13 peacekeepers.

Tens of thousands of people are fleeing towns in the Democratic Republic of Congo's east, as rebel forces close in on the city of Goma. Explosions and gunshots were heard in city - home to more than a million people - late on Sunday evening, according to local media reports.

Congo has severed diplomatic ties with Rwanda as fighting between Rwanda-backed rebels and government forces rages around the key eastern city of Goma, leaving at least 13 peacekeepers and foreign soldiers dead and displacing thousands of civilians.

The Democratic Republic of the Congo has severed diplomatic relations with Rwanda. The decision is based on allegations that authorities in Kigali are supporting rebels attacking Congolese government forces.

The Democratic Republic of Congo has severed diplomatic relations with Rwanda. This decision is due to the government in Kigali supporting rebels who are attacking Congolese government forces. At least 13 soldiers from international peacekeeping forces have lost their lives in the internal conflict.