in from the reuters newsagency. we are not sure if that is connected to the earlier reports we told you about, about an explosion in central cairo. that's all the information we have right now. we will bring you on that and when we get it >>> chadian troops operating in cameroon launched an offensive under the control of boko haram. nigeria said it retook five towns held by the armed group, following a joint offensive by military and civilian vigilantes. they repelled an attack by boko haram in the north-eastern town. boko haram has launched cross-border attacks from nigeria to cameroon and chad. they share a long porous border. fighters are thought to control half of borneo state in the north of nigeria. there was a growing refugee. more than 14,000 crossed lake chad in early january from the north-east town of baga. there has been more attack in north-east nigeria ahead of the february 14th elections there. on monday one person was killed and 18 injured in a car bomb attack on a campaign rally held by nigeria's pr