Nigeria 's military says it has retaken the northeastern town of Gwoza from Boko Haram . The announcement comes on the eve of the West African nation 's general elections . Boko Haram declared Gwoza the headquarters of its `` caliphate '' March 9 .
Nigeria 's military says it has retaken the northeastern town of Gwoza from Boko Haram . The announcement comes on the eve of the West African nation 's general elections . Boko Haram declared Gwoza the headquarters of its `` caliphate '' last August .