DOUALA, Cameroon (Reuters) - Two children carrying explosives blew themselves up on Friday near a camp in northern Cameroon housing civilians displaced by Nigeria's Boko Haram militants, killing nine people and wounding 30, officials said. They entered the town of Kolofata, around 10 km (6 miles) from the border with Nigeria, before dawn, posing as refugees looking for food before the start of the daytime fast for Ramadan. "Two suicide bomber adolescents aged between 10 and 15 years infiltrated the town of Kolofata," Communications Minister Issa Tchiroma Bakary told state radio, adding that both had detonated their explosives.-snip-Villages and towns...