The Rwanda-backed armed group M23 vowed Thursday to "continue the march of liberation" to the DR Congo capital Kinshasa, as its fighters made further advances in the mineral-rich east of the country.

French Foreign Minister Jean-Noël Barrot has arrived in Congo's capital Kinshasa, an official at the presidency said on Thursday, as Rwanda-backed rebels consolidated control of Goma in the east of the African country.

Anti-Rwandan protests broke out in Kinshasa Tuesday morning, as rebels battled Congolese forces in the key eastern city of Goma.

The fresh offensive by the M23 rebels and Rwanda forces in Eastern Democratic Republic of the Congo (DRC) coincides with the first anniversary of the Memorandum of Understanding (MOU) signed between the European Union (EU) and Rwanda to cooperate on the supply of "critical minerals.

The latest fighting has heightened an already dire humanitarian crisis in the region, forcing half a million people from their homes since the start of the year.

South Africa and Rwanda’s already fraught diplomatic relations have worsened after President Cyril Ramaphosa accused the Rwanda-backed M23 rebel group of killing South African peacekeepers in the eastern Democratic Republic of Congo.

Rioters stormed embassies and started fires in Democratic Republic of Congo's capital Kinshasa, drawing tear gas from police, in an eruption of protests over a Rwandan-backed rebel offensive in the east.

Police in Democratic Republic of Congo (DRC) fired tear gas at protesters in the capital, Kinshasa, on Tuesday, after embassies were attacked over the conflict in the country's east.

Local sources said Kigali-backed fighters were advancing on a new front and had seized two districts in South Kivu province, after the rebel group’s capture of most of Goma, the capital of North Kivu.

Rwandan-backed M23 rebels asserted their control over east Congo's largest city Goma on Thursday by calling on residents to resume normal life, even as the group clashed with Congolese troops as they tried to take more territory.

Rebels backed by Rwanda have captured more towns in eastern Congo as fighters moved beyond the key city of Goma in an apparent attempt to expand their control in the conflict-battered region