Several African leaders will hold a summit later this month in South Africa in the latest effort to end Burundi's 10-year-old civil war.
Sources close to the negotiations said Sunday the parties will analyze proposals for power-sharing between the main ethnic Hutu rebel group and the government of President Domitien Ndayizeye.
The proposals will likely focus on control of the army, traditionally dominated by Burundi's ethnic Tutsi minority.
Rebel Hutus in the Forces for the Defense of Democracy group are not party to Burundi's current power-sharing arrangement, which went into effect in late 2001. The civil war has claimed some 300,000 lives.
Uganda, Tanzania, Rwanda and South Africa have been involved in the Burundi peace process.