article_snippet: Officials refused to provide details of a U.S. official release, but said her release involved some form of negotiations.
article_snippet: Kogi state is located away from the areas where Boko Haram operates, making Boko Haram likely that the kidnapping is not related to the kidnapping.
article_snippet: But there is the possibility that an offshoot group could have kidnapped Sortor, or that a U.S. official might be sold to another group.