People rest in a ward at a state hospital as they receive treatment for injuries sustained following a bomb blast that left dozens dead and many injured in Maiduguri, on March 8, 2015. Three bombings in northeast Nigeria's largest city of Maiduguri killed 58 people on March 7, 2015 and wounded 139 others, the area police chief said. Niger and Chad on March 8, 2015 launched major ground and air strikes in northeast Nigeria against Boko Haram, after the militants formally pledged allegiance to the Islamic state group in Syria and Iraq. AFP PHOTO/OLATUNJI OMIRIN        (Photo credit should read OLATUNJI OMIRIN/AFP/Getty Images)