Nearly 70 people have died in days of fighting between Nigerian forces and suspected Islamist gunmen in the country's north-east, officials say. More than 50 Boko Haram militants were killed in a lengthy gun-battle in the town of Damaturu, said army chief of staff Lt Gen Azubuike Ihejirika. Separately, at least 11 people died in a clash in the city of Maiduguri. Boko Haram, whose name means "Weste