A Chinese court says a corruption trial has started for the former chairman of the stated-owned parent of PetroChina Ltd., Asia's biggest oil producer.

Jiang Jiemin was chairman of the state-run China National Petroleum Corp., the target of a sweeping graft investigation amid a larger anti-corruption campaign that has netted top officials and others.

Hanjiang Intermediate People's Court in Hubei province said on its microblog Monday that Jiang is charged with taking bribes, possessing a large number of assets from unidentified sources and abusing his position at a state-owned enterprise.

A series of senior figures from the state-owned oil industry have been detained in the crackdown led by President Xi Jinping that appears to be aimed at tightening central control over PetroChina and other powerful state companies.