KOULKIMÉ, Chad — Alhadji Yaro was a teenager when Boko Haram militants stormed onto his island in the vast, blue-green waters of Lake Chad and made villagers an offer at gunpoint.

The map depicts deaths by state. Borno State, in Nigeria's North East, is the epicenter of Boko Haram-related violence, which has also spilled into neighboring Adamawa and Yobe states, among others.

Residents of Buni Yadi, the hometown of Yobe State Governor Mai Mala Buni, have expressed fear over the worsening security situation, with the rampaging Boko Haram terrorists. The Boko Haram ...

Armed Boko Haram terrorists have raided the Wajirko army formation in the Damboa local government area with another formation in Wulgo village of Gamboru Ngala local government area in Borno state.