There has been widespread condemnation of Mali's troops, after they ousted President Amadou Toumani Toure.
The UN Security Council called for the "immediate restoration of constitutional rule and the democratically elected government".
The World Bank and African Development Bank said they were suspending all aid until the crisis is resolved.
Meanwhile, soldiers looted the presidential palace in the capital Bamako, following the coup.
In a separate development, Kenya's Foreign Minister Moses Wetangula and his delegation are stranded in the country, as Bamako's airport is closed.