France's foreign minister was due in Rwanda on Thursday after talks in the Democratic Republic of Congo as part of efforts to prevent a regional escalation following the capture of the eastern Congolese city of Goma by M23 rebels and Rwandan troops.

France's Foreign Ministry said that Congo's territorial integrity was "not negotiable" after Rwanda-backed M23 rebels took the eastern city of Goma. M23 rebels said they would march "all the way to Kinshasa.

Rwanda, which diplomats say backs M23 fighters who seized Goma in Democratic Republic of Congo this week, called on Wednesday for a ceasefire across eastern Congo and for Congo to negotiate with the rebels while denying Rwandan troops were involved.

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.

Paris has condemned an attack on its embassy in the Democratic Republic of Congo's capital, Kinshasa. The attack came amid demonstrations against the escalating conflict in the country's east.

Rwanda-backed fighters advanced on a second front in their offensive across eastern DR Congo on Wednesday after seizing control of most of the key city of Goma during heavy fighting