Heavy gunfire resonated across the key eastern Congolese city of Goma on Sunday from the frontline just a few kilometres away.

Footage shows troops, some in army uniform, handing over arms to Rwandan security officers after crossing into eastern neighboring country at the main border crossing in Rwanda's Rubavu district - Ana

The M23 armed group and Rwandan soldiers entered the centre of Goma on Sunday night after weeks of advancing on the main city in the Democratic Republic of Congo’s North Kivu province.

Heavy artillery fire could be heard in Goma on Monday, hours after Rwandan troops and fighters from the M23 rebel group entered the capital of North Kivu Province. The UN has warned of a looming crisis.

Fighting with M23 rebels in eastern Democratic Republic of Congo left six United Nations peacekeepers dead, UN officials said Saturday.

The M23 rebels announced the city's capture in a statement minutes before a 48-hour deadline expired that had been imposed by the group for the Congolese army to surrender their weapons.

Rwandan-backed rebels marched into east Congo's largest city Goma on Monday and Congolese troops exchanged fire with the Rwandan military across the border, in the worst escalation of a long-running conflict for more than a decade.

Fleeing prisoners streamed from the torched jail as Rwanda-backed rebels claim they have captured the strategic city

An insurgency led by M23 rebels in eastern Congo has escalated and reached the city of Goma, worsening a humanitarian crisis in a region that suffered two devastating wars between 1996 and 2003.

Fighting in Goma forces thousands to flee as rebels claim control of the city, escalating tensions in eastern Congo's North Kivu province.

Rwanda-backed Congolese rebels from the M23 movement have announced the capture of the major city of Goma in the eastern Democratic Republic of Congo (DRC). Reports indicate casualties among international peacekeepers,