_________________________________The Prime Minister Kalzeube Pahimi Deubet made the announcement after meeting religious leaders. He blamed the attack on the Nigeria Islamist group Boko Haram which is increasingly using female suicide bombers. Security has been increased in the capital of N'Djamena since the bombings which targeted the police headquarters as well as a police academy. World news from the BBC. _____________________________________乍得总理帕伊米?德贝在会见了宗教领导人后宣布了该决定.他指责尼日利亚的激进组织博科圣地制造了这起袭击案.博科圣地组织越来越多地使用女性作为自杀式炸弹袭击者.由于炸弹袭击的目标是警局总部和警察院校,因此当局加强了首都恩贾梅纳的安保工作.BBC世界新闻.