At least 13 people were killed in attacks on government targets over two days in northeast Nigeria, where security forces are waging a growing battle against militants, Reuters cited army and police as saying on Friday. Unknown gunmen fired on an army post in the town of Marte on Wednesday, while suspected insurgents used grenades and bombs against government and police offices in Adamawa state on Thursday, security forces said. More than 50 people have been killed in this restive region of Africa's top oil producer over the last two weeks in worsening clashes between fighters suspected of belonging to sect Boko Haram and the security forces. Marte is a remote town on the threshold of the Sahara, close to Nigeria's porous borders with Cameroon and Niger, and about 100 km (62 miles) from Maiduguri, Boko Haram's headquarters and the largest town in the northeast. -- SPA
