The girls were among the 276 abducted by Boko Haram in April 2014. More than 100 remain in the militants' hands.
Boko Haram released 82 more girls, but global scrutiny and a long rehabilitation program means freedom may yet prove elusive.
A report alleged that the U.K. offered to rescue the girls, but Jonathan declined.
Two years on, Nigeria and its allies must not give up searching for the 219 teenagers still missing.
A report says half of the militant group's suicide attacks in Cameroon are carried out by children.
The girls have been missing since April 14, 2014, when they were abducted by Boko Haram.
Boko Haram kidnapped more than 200 schoolgirls in April 2014.
Almost two years after their abduction, the Bring Back Our Girls group is marching on President Buhari's house.
More than 200 girls remain missing despite Buhari's claim that Boko Haram had been "technically" defeated.
Hassan John is a Christian pastor in Jos, central Nigeria. Boko Haram wants him dead.
Can Nigeria's President Muhammadu Buhari fulfill his pledge to defeat the deadly Islamist group by the end of the year?
Children face abduction and conscription by the extremist group, which has killed an estimated 1,000 people this year.
The Nigerian jihadist group are reported to have killed 2,000 since the beginning of the year.
Although no one has claimed responsibility, the attack bore the hallmarks of Boko Haram.
More than 200 girls kidnapped by Boko Haram have been "married off" to its fighters, contradicting Nigerian government claims they would soon be freed, according to a man claiming to be their leader.
Nigeria's armed forces chief Air Chief Marshal Alex Badeh announced the ceasefire on Friday to enable the release of the girls.
Nigeria's military has reportedly agreed a truce with Boko Haram, in a deal that may also see the release of 200 schoolgirls taken hostage by the Islamist group