A series of emergency management and local government officials in central China’s Hunan province have come under investigation following a catastrophic fireworks factory explosion that killed 37 people last month.The provincial discipline inspection commission announced on Thursday that three senior figures within the emergency management system were under investigation for “serious violations of discipline and law”.The officials are Lei Min, deputy director of the safety production emergency rescue command centre of Hunan’s emergency management department; Zhong Caifa, former deputy director of Changsha’s emergency management bureau; and Yang Hai, the deputy Communist Party chief and director of the Liuyang emergency management bureau.Zhong Caifa, former deputy director of Changsha’s emergency management bureau, is among officials being investigated. Photo: SohuThe investigations come less than a week after a similar hammer fell on Liuyang’s administration.On June 5, municipal watchdogs announced simultaneous inquiries into Li Xiang, former vice-mayor of Liuyang; Gao Chengjian, a former deputy captain of the Liuyang police patrol brigade; and Liu Yongqiang, an emergency management official in Liuyang’s Guandu township.The rapid series of detentions forms an aggressive accountability chain linked directly to the explosion at the Huasheng Fireworks Manufacturing and Display Company in Liuyang, which falls under the jurisdiction of Changsha.Officials are also investigating Yang Hai, deputy Communist Party chief and director of Liuyang’s emergency management bureau. Photo: SinaIn addition to the 37 killed in the blast on May 4, some 51 people were admitted to hospital and one person remains missing.