AI also said it independently verified a list of Nigerian security officials alerted on 19 February, before and during the raid on the school which, according to the group, was carried out by approximately 50 Boko Haram fighters who arrived the town in a convoy of nine vehicles with Arabic inscriptions, seven Landcruiser trucks, one Hilux and a Canter truck.
The girls were kidnapped from Government Girls Science and Technical College, Dapchi, located in Bulabulin, Yunusari Local Government area of Yobe State.
It cited evidence from eye witnesses and residents who claimed they alerted Geidam army base in the Nigerian state of Yobe and local police after they saw a convoy of gunmen heading towards the girls' school.
The coalition of civil society groups against terrorism in Nigeria has accused global rights organization, amnesty worldwide of what it described as its judgmental reports on the security situation in the troubled North eastern part of the country.
"And what procedures are supposed to be followed in response to an attempted abduction?" The nearest military detachment was an hour away. Nigeria's Buhari said last week he had ordered all military and security agencies to search for them, vowing that the government would not rest until the last girl kidnapped by insurgents has been released.
Amnesty equally alleged that a police source disclosed that officers fled the town over the fear that Boko Haram may "overpower them".
The military also ignored warnings given some hours before almost 300 schoolgirls were abducted by Boko Haram from a boarding school in Chibok, Borno State in 2014, the Amnesty report said.
He added that Amnesty International has failed to answer a number of questions, including which security force units allegedly had advance warning of the attack and why the group failed to give its findings to a group probing the abduction.
Amnesty International demanded the government make public the results of the investigation, adding that no lessons have been learned since the Chibok attack.
People in Dapchi have previously said troops were withdrawn from the town earlier this year, leaving only a few police officers. While some escaped and many others were released as part of negotiations, about 100 remain with their captors. Why has Amnesty International refused to communicate its findings with the Federal Government's Committee set up to investigate what happened before, during and after Dapchi girls abduction?
A relative of one of the missing school girls reacts in Dapchi in the northeastern state of Yobe. They are yet to be rescued by the Nigerian authorities.
Dan-Ali was also confident that the girls would return in the shortest time owing to the intelligence at the government's disposal, though he could not say the exact time when this would be.