The former chairman of China National Petroleum Corporation, and its listed firm PetroChina, has been sentenced to 16 years in prison for graft, Chinese state television said on Monday.
Jiang was a close associate of Zhou Yongkang, the once-powerful domestic security chief and member of the elite Politburo Standing Committee, the most senior person to have been charged with corruption.
Several senior CNPC executives have been put under investigation in a far-reaching crackdown by authorities. Jiang Jiemin, who was formally charged in March.
CNPC, the parent of PetroChina, was a power base for disgraced Zhou Yongkang, who was jailed for life for corruption in June, and his former colleagues or political allies were caught in the sweeping graft probe.