Suicide bomber killed by troops

Nigeria’s National Emergency Management Agency says troops have gunned down a suicide bomber at a transit camp for refugees from Boko Haram in the northeastern city of Maiduguri. The Saturday attack is the sixth in three weeks in the Nigerian city that was the birthplace of the Islamic extremist uprising that has killed more than 20 000 people in seven years. Security forces have foiled most of the attacks. Boko Haram has recently stepped up attacks after a months-long lull.