President Donald Trump of the U.S. had reportedly noted a "massive" corruption in Nigeria while commending Buhari for the effort of his government to fight graft in the country.
Meanwhile, President Buhari is said to have had "a technical stop" over in London, on his way back to the country.
The explanation was offered by the President's Senior Special Assistant on Media and Publicity, Mallam Garba Shehu.
Former military Head of State, General Yakubu Gowon (retd) has cautioned the National Assembly on the impreachment moves against President Muhammadu Buhari, adding it will not be in the interest of Nigeria.
The president, who left the country on Saturday night and arrived Washington D.C. on Sunday, touched down at Nnamdi Azikiwe International Airport at about 11 p.m. last night.
He said the "big" president jet is faulty and is now undergoing repairs, while the one he is using is limited in capacity. It has been taken for major repairs.More news: Bruins' Torey Krug Out For Game 5 With Lower Body Injury
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"Garba Shehu, spokesman of President Buhari, speaking on the United Kingdom stopover, said the big" presidential jet is undergoing repairs and there was a limit to the travel distance of the small plane his principal was now using.
Shehu also explained that the flight crew travelling with President Buhari made a decision to break the long journey to refuel and do the routine checks. This is very normal. The plane can do Abuja-Washington, that's about 12 hours and the maximum the plane can fly is 12 hours, 40 minutes.
On Thursday, government officials said Buhari would return to the Nigerian capital of Abuja on Thursday evening on a separate aircraft. "In any case, they are already on their way back home". "But you don't need to push it to the edge", he said.
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"This is especially as President Buhari's foreign trips, which come at great costs, have not brought any gains to our country".