The alliance won the re-run five months after the first vote with 58.57 per cent of the total votes as declared by the country’s electoral commission.

Buhari’s congratulatory message was conveyed by his Senior Special Assistant on Media and Publicity, Malam Garba Shehu, in Abuja on Sunday.

The Nigerian leader said: “Greetings from the government and people of Nigeria.

”I congratulate you and the alliance on your impressive victory in the elections.

”I look forward to working with you for the advancement of peace, security and development of the entire continent.”