"The release of the girls...is the outcome of negotiations between the administration and the Boko Haram brokered by the International Red Cross and the Swiss government," a presidency statement said.
Eight killed in female suicide bomb attack in NE Nigeria
"The negotiations will continue." Around 270 girls were taken from their school in Chibok in April 2014. Dozens escaped in the initial melee, but more than 200 are still missing.
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