From @DefenceInfoNG: The Nigerian Military’s Air Task Force (Op Lafiya Dole) attacking ISWAP Bases around Lake Chad on Friday April 3, closely supported by the MNJTF (which is the regional military force comprising Nigeria, Niger, Chad, Cameroon, Benin).
The renewed MNJTF offensive (looks like it kicked off last week) is by a combo of Sector 2 (Chad), Sector 3 (Nigeria) and Sector 4 (Niger). And the primary target is Tunbuns Islands on Lake Chad: https://www.google.com/amp/s/thenationonlineng.net/nigeria-niger-chad-launch-new-offensive-against-boko-haram/amp/