Zhou arrested as part of corruption probe , expelled from Communist Party . Zhou Yongkang was a member of the ruling Communist Party 's Politburo Standing Committee . He 's the highest-ranking official to get caught up in President Xi Jinping 's anti-corruption campaign . His political skill shone when he was transferred to the oil ministry in Beijing , which later became a giant state-owned oil company and one of Zhou 's power bases . Comment:
Zhou arrested as part of corruption probe , expelled from Communist Party . Zhou Yongkang was a member of the ruling Communist Party 's Politburo Standing Committee . He 's the highest-ranking official to get caught up in President Xi Jinping 's anti-corruption campaign . Comment: