Twenty one of the abducted Chibok schoolgirls have been released by Boko Haram, Presidential spokesman, Garba Shehu confirms.

According to Shehu, their release is the outcome of negotiations between the government and the sect, which was brokered by the International Red Cross and the Swiss government.

He said the negotiation is still ongoing - this is expected to lead to the release of more of the girls.

More than 200 of the girls were kidnapped by the sect  in April 2014 and there has not been any major breakthrough in their rescue efforts since then.

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In May 2016, one of the girls, Aminat Nkeki was found with a babyand a suspected Boko Haram member, Mohammed Hayatu,whoclaimed to be her husband.

Hayatu has since been detained.