Key facts
- Hu Haijun, director and Communist Party chief of the Shanxi Bureau of the National Mine Safety Administration, is under investigation.
- The investigation is for suspected serious violations of discipline and law.
- The probe follows a coal mine explosion in May that killed 82 people.
- Hu is the highest-ranking official ensnared in the widening investigation.
Hu Haijun, the top mine-safety regulator in China's coal-rich Shanxi province, is under investigation for suspected corruption. The probe by central and provincial anti-graft authorities follows a catastrophic mine explosion in May that claimed the lives of 82 people. Hu, who serves as director and Communist Party chief of the Shanxi Bureau of the National Mine Safety Administration, is the highest-ranking official to be ensnared in the widening investigation.