The UN has said it has credible reports that refugee camps providing shelter to 50,000 displaced people in the eastern Democratic Republic of Congo have been destroyed.
The UN refugee agency said reports suggested that six camps were forcibly emptied and looted before being burned.
Rebel troops are poised to take the city of Goma, as the EU considers sending troops to the region.
More than 250,000 people have been displaced by the recent fighting, which the Red Cross has described as a humanitarian catastrophe.
President Joseph Kabila has agreed to meet Rwandan counterpart Paul Kagame at an emergency summit organised by the European Commission, EU development commissioner Louis Michel said.
Mr Michel said: 'I have asked (UN Secretary General) Ban Ki-moon to organise a meeting at the highest level. President Kabila has signalled his accord and so has President Kagame.'
Rebel leader Laurent Nkunda, whose forces are threatening to grab the strategic eastern DR Congo city, offered yesterday to open humanitarian corridors for tens of thousands of civilians displaced by combat.
Only 850 UN peacekeepers stand between Goma and Mr Nkunda's forces, after government troops fled the city on Wednesday.
In a letter to the UN mission, Laurent Nkunda vowed to allow 'humanitarian organisations access to those in need who are behind our lines.'
UN forces' operations chief Lt Col Samba Tall said the ceasefire called on Wednesday was holding, and said his MONUC force was respecting its mandate, under which it could engage the rebels if necessary to protect civilians.
Looting
In Goma, where shops, schools and offices are closed, witnesses claimed out-of-control remnants of the Congolese army, many of them drunk, had killed civilians during overnight looting.
Mr Nkunda's forces and the army resumed fighting in August, breaking a ceasefire agreement signed in Goma in January.
The Tutsi rebels say they are defending the inhabitants of Nord-Kivu province against atrocities committed by DR Congo forces and an allied Rwandan Hutu rebel group- the Democratic Forces for the Liberation of Rwanda.
In Brussels, EU diplomats are scheduled to discuss whether to deploy troops to the region after aid agencies warned of a humanitarian catastrophe.
France has suggested the deployment of up to 1,500 soldiers who would provide technical and humanitarian support to the UN force.
French Foreign Minister Bernard Kouchner said that while the force in question was military, its mission would be to get aid to refugees.
The EU has twice previously sent troops to Congo to buttress the existing UN mission, MONUC.
But the Council is reluctant to send more troops to a crisis where the main participants appear to have yet to make a full commitment to peace.
And there is concern as to why MONUC should need more troops when it already has 17,000 at its disposal.
