Preparations are almost complete for the funerals

The Council, which held an emergency meeting on Sunday, called on Burundi and Congolese authorities to co-operate to bring those responsible to justice.

Hutu extremists have been blamed for the killings.

The UN has asked Burundi to set up a refugee camp away from the DR Congo border where the killings took place.

Differing reports

UN Secretary-General Kofi Annan said the incident had "shocked and outraged" him.

Many of the victims were Tutsi women, children and babies, who had fled fighting in southern DR Congo in June.

Armed with machetes, guns and grenades, the attackers had entered the camp on Friday evening and set fire to several shelters where they were living.

In pictures: Tutsi massacre

The president of Burundi said the massacre was carried out by Congolese who had crossed into his country.

But a Burundi rebel group - the Hutu FNL - said the killings had occurred during their attack on an army base next to the refugee camp.

The FNL is the only active rebel group of Hutus fighting against the Burundian government dominated by the Tutsi minority. About 300,000 people have been killed during the conflict.

Rwanda has also blamed the massacre on Hutu extremists in the DRC - some from the militias that carried out the Rwandan genocide in 1994.

The Gatumba camp where the refugees were residing provides shelter for 1,700 people.

The FNL rebel group said it had aimed to hit a military base, some 500m from the Gatumba camp.

A statement issued by the 25-nation EU urged the FNL to enter peace talks.

"This bloody attack indicates once again that it is necessary for all parties involved in the conflict in Burundi to intensify their efforts, without hesitation, in order to reach real and enduring peace," the statement said.

"An immediate cease-fire between the FNL and the government is the first step in this direction."

In the past, the FNL said it would only negotiate with the Tutsi leadership of the army who, it claims, hold the real power in Burundi.