Twenty-one of the Chibok schoolgirls kidnapped by Boko Haram have been freed, a senior Nigerian government official has told the BBC.
The official wanted to remain anonymous and the government has not issued a statement.
Previous reports of the girls’ release have turned out to be wrong.
The Islamist militant group kidnapped more than 250 students from a school in Chibok in April 2014 – an act that provoked international condemnation.
The BBC’s Martin Patience in Nigeria says the government official did not say how the kidnapped students had been rescued.
But it is thought they are now with the security services in the north-eastern city of Maiduguri.
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Chibok schoolgirls: Group ‘freed’ in Nigeria