Zhou's former colleagues who have been probed

From the security authorities

Li Dongsheng, former vice minister of public security, was probed in December 2012.

Ji Wenlin, former vice governor of South China's Hainan province, was probed on Feb 18, 2014. Ji was a former secretary of Zhou Yongkang.

Yu Gang, former vice head of the general office of the Commission for Political and Legal Affairs of the Communist Party of China Central Committee, was expelled from the CPC on July 2.

Tan Hong, a former senior officer in the guard bureau of the Ministry of Public Security, was expelled from the Communist Party of Chin on July 2.

Liang Ke, former head of Beijing Municipal Bureau of National Security, was removed from his post on Feb 21.