M23 insurgency in eastern Congo has intensified in January with the rebels seizing control of more territory than ever before, prompting the United Nations to warn of the risk of a broader regional war.

Laden with just the possessions they can carry, thousands of displaced people have reached the outskirts of the city of Goma in eastern Democratic Republic of Congo, fleeing a rapid M23 rebel advance that has taken more territory than ever before.

The M23 armed group has seized further territory in the east of the Democratic Republic of Congo and on Thursday was continuing to tighten its grip on provincial capital Goma, which is almost surrounded by fighting.