Boko Haram sacked two military bases in northeast Nigeria overnight as the jihadists battle for control of a strategic town on Lake Chad, military sources said. Jihadists from the IS-supported Islamic State West Africa Province (ISWAP) overran a naval base and a multinational joint task force (MNJTF) post in the fishing town of Baga after a fierce battle, the sources said. Boko Haram has repeatedly struck military outposts in the region in recent months.