Receiving the US Secretary of State, Rex Tillerson, at State House, Abuja on Monday, Buhari added that Nigeria was working in concert with worldwide organizations and negotiators, to ensure that the girls were released unharmed by their captors.
Tillerson's first official Africa visit includes Ethiopia, Djibouti, Kenya, Chad and Nigeria.
His meeting with the president was announced by Buhari's Personal Assistant on New Media, Bashir Ahmad on Twitter.
"When he arrives, Tillerson will become the highest ranking official in the Trump administration to visit Nigeria".
Ronaldo scores 2 to give Real Madrid 2-1 win at Eibar
But Ronaldo proved the difference again, the 33-year-old taking his tally for the season to 35 goals in 37 appearances. Former Wigan defender Ivan Ramis headed in an equaliser for Eibar and it looked like they would secure a point.
Mr. Tillerson said the US government does not seek to stop funds flowing into countries that need investments but to encourage countries borrowing to be cautious. Nigeria is Africa's biggest oil producer whose security forces are battling Boko Haram Islamist militants in the northeast.
Chad past year was stunned to find itself on one of six mainly-Muslim countries whose countries are affected by President Donald Trump's travel ban.
A report on Chad's progress was being prepared in Washington and would be reviewed by President Trump next month, Tillerson said."We have to wait for the final report", he added.
The United States has yet to hear back from North Korea about its proposal for a summit, which President Donald Trump accepted last week, Washington's top diplomat said Monday. And in the months since, the US has repeatedly praised Chad's efforts to improve its compliance with USA requirements.
Medicaid expansion bill clears Senate committee
While many bills have passed or been killed in the last two months, there are still dozens being considered in both chambers. For the first time since the late 80s, West Virginia lawmakers are on track to pass the budget within the 60-day session.
The various versions of Trump's travel ban have faced opposition in US courts.
Nonetheless, the trip hasn't been easy for Tillerson.
Tillerson, while in East Africa, cancelled scheduled events on Saturday on the grounds of ill-health.
"The Secretary is feeling better and will resume his normal schedule tomorrow (Sunday)", Undersecretary of State for Public Diplomacy and Public Affairs Steve Goldstein told the pool reporters traveling with the secretary.
At least three dead, several injured as blaze destroys factory in Tarapur
Loyal eyewitnesses said that the explosion sounded like a bomb when they were preparing to retire for the night. The causality feared many who thought it was an natural disaster that rushed to the streets and sat there.