BEIJING (AP) - The former boss of China's biggest aluminum producer has become the latest business leader brought down by the ruling Communist Party's spreading anti-corruption campaign.

BEIJING (AP) The former boss of China's biggest aluminum producer has become the latest business leader brought down by the ruling Communist Party's spreading anti-corruption campaign.

The party's discipline commission said Tuesday that Sun Zhaoxue was expelled from the ruling party on charges of taking bribes and adultery. It said his case was handed over to prosecutors.

Sun stepped down as general manager of state-owned Aluminum Corp. of China, or Chinalco, in September after the investigation was announced.

Tuesday's announcement said Sun was accused of taking bribes, improperly abusing his post to help others and adultery but gave no other details of the case.

Sun's case represents an expansion of the anti-graft drive to new segments of China's state-owned resource industries after executives at oil and gas producers were accused of corruption.