The Oath of Office was administered around 10.15 am by the acting Chief Justice of Nigeria, Justice Tanko Mohammed.
President Buhari was on February 27, declared the winner of February 23 presidential elections by the Independent National Electoral Commission.
Buhari, the candidate of the All Progressives Congress polled 15,191,847 votes to defeat the country’s former Vice President Atiku Abubakar of Peoples Democratic Party, who had 11,262,978 votes.
The 2019 presidential inauguration, which held at the Eagle Square, was heralded by a colourful military parade which received the service chiefs, CJN, Vice President and President as they arrived.
Soon after the swearing-in, there was the lowering and hoisting of National and Defence flags and 21 gun salutes.
Afterwards, the president inspected the Guard of Honour and acknowledged cheers from the guests.
Others were service chiefs, members of the diplomatic corps, members of the Federal Executive Council, Senate President, Speaker of the House of Representatives, Secretary to the Government of the Federation, Head of Civil Service of the Federation and captains of industry.