President Muhammadu Buhari will travel to Banjul, the capital of the Gambia and Bamako, the Malian Capital, today.
In Banjul, President Buhari, as the mediator in the Gambia, is scheduled to meet with President Yahya Jammeh of the Gambia and the president-elect Adama Barrow to continue dialogue on the political situation in the Gambia.
The president will be joined by President Ellen Johnson-Sirleaf of Liberia and Chairperson of the authority of ECOWAS heads of state and government, president Ernest Koroma of Sierra Leone, and the immediate past president of Ghana, John Mahama.
The winner of December's presidential election in the Gambia says is confident he will be sworn in next week despite President Yahya Jammeh's refusal to give up power.
Adama Barrow told BBC that he had called on Mr. Jammeh to engage in direct talks.
Mr jammeh's term officially ends next Wednesday but he is challenging the election results in court.