China is investigating three more officials in its central Hunan province in connection with a deadly fireworks factory explosion that killed 37 people. The probe targets emergency management and local government figures.

Anti-corruption watchdogs in China’s central Hunan province have ensnared multiple emergency management and local government officials in a sweeping 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 include Lei Min, deputy...