The incumbent President, Yahya Jammeh has rejected the results of the presidential election which he lost to his opponent.
According to BBC, Buhari will be joined by other West Africa leaders, in a bid to end the political crisis in Gambia.
Jammeh lost the just-concluded election in the country and conceded the elections to Barrow, a real estate mogul who has never held a political office.
“I’m calling you to wish you all the best, the Gambian people have spoken and I have no reason to contest the will of Almighty Allah,” Jammeh had said at the time.
The December 1 vote saw Barrow win 222,708 votes (43.3%), while Jammeh polled 208,487 (39.6%).
Jammeh later turned round to reject the election result, saying: “After a thorough investigation, I have decided to reject the outcome of the recent election.
“I lament serious and unacceptable abnormalities which have reportedly transpired during the electoral process. I recommend fresh and transparent elections which will be officiated by a god-fearing and independent electoral commission.”