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The agreement also includes a cease-fire between the group and Nigeria's military, which has been involved in a 5-year insurgency that has killed thousands, mostly in Nigeria's impoverished northeast.

A Nigerian security official told Reuters on Friday that "commitment among parts of Boko Haram and the military does appear to be genuine..[and] is worth taking seriously," though some international sources remain skeptical that a terror group will honor such a deal.

It was not stated when or where the girls will actually be released. 

Read more at Reuters. 

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