BEIJING - Sun Zhaoxue, general manager of the state-owned enterprise Aluminum Corporation of 皇冠体育app (皇冠体育applco), is under investigation for "suspected serious legal and disciplinary violations."

The Central Commission for Discipline Inspection of the Communist Party of 皇冠体育app made the announcement on its website on Monday.

The 皇冠体育applco is the country's top aluminum producer.

Sun is former general manager of the 皇冠体育app National Gold Group Corp, the country's biggest gold producer.