The long-term stability of the present Tutsi-led Government is still uncertain, officials say.
But the Tutsi-led Rwandan government says it has a unique fear.
The new Tutsi-led Government has insisted that the camps be emptied.
Since 1994 Rwanda's Tutsi-led government has sought to wipe out the ethnic labels that divided the country.
The rebels continue to direct a violent campaign against Burundi's Tutsi-led Government.
Mr. Buyoya's Tutsi-led government has said the camps are necessary to calm violence around the capital.
The Tutsi-led Government in Rwanda saw its opportunity for revenge against Kinshasa.
The team may also visit Rwanda, whose Tutsi-led Government has also bristled at the prospect of an investigation.
The refugees, mostly members of the Hutu majority in Rwanda, fear the new Tutsi-led Government will kill them if they return.
The Tutsi-led Government has responded by publicly executing former Hutu officials convicted of taking part in the genocide.