Speaking to journalists at the Southern African Development Community (SADC) summit in the Mozambican capital, Maputo, Mr Museveni said both governments had launched investigations into the violence in the Democratic Republic of Congo.

He confirmed that a ceasefire was in operation and said "things are still fine ... it's very quiet."

President Museveni and his Rwandan counterpart Pasteur Bizimungu were invited to Maputo to brief SADC members on the crisis even though they are not official members of the community.

Reports from Kisangani itself suggest the ceasefire is holding although the city remains tense.

(Click here to see a map of the region)

"There hasn't been one shot and supply vehicles are beginning to move about," said one Rwandan commander, quoted by the Associated Press.

Joint communique

Uganda and Rwanda declared a new ceasefire on Tuesday after several days of fierce fighting.

The two countries are supporting different factions of the Congolese rebel movement, the Rally for Democracy (RCD).

The agreement came in a joint communique signed by President Museveni and Rwandan Vice-President Paul Kagame, after a meeting at a Ugandan safari lodge.

Rwanda and Uganda also reiterated their support for the peace agreement aimed at ending the war in DR Congo signed in Lusaka in July.

Soon after the ceasefire announcement the rebel leader, Ernest Wamba dia Wamba, who is backed by Uganda, accused Rwanda of continuing to attack his positions.

The BBC's correspondent in the Rwandan capital, Kigali, Chris Simpson, says there there are unconfirmed reports that the three-day battle was effectively won by the Rwandan army, which backs Mr dia Wamba's rival Emile Ilunga.

Unconfirmed reports on Monday estimated that some 50 people had been killed in the fighting since it broke out on Saturday at Bangoka international airport.

Withdrawal urged

The United Nations Security Council urged the fighting factions on Tuesday to immediately resolve their differences and sign the Lusaka ceasefire agreement.

Rivalry between the two factions blocked the rebels from signing a peace accord brokered on 10 July in the Zambian capital which was signed by six African governments involved in the year-long conflict.

Fighting in DR Congo has trapped women and children in clinics where they came for the vaccination programme.

UN Secretary-General Kofi Annan said on Monday that the fighting violated a truce which he had requested and which all parties had endorsed to allow the vaccination programme to continue unhindered in August.