TIMELINE: Zhou Yongkang's fall from grace
Tracing China's disgraced security tsar's career from his ancestral home in Jiangsu to the Zhongnanhai Communist Party leadership compound in Beijing
On Tuesday, China announced that former security tsar Zhou Yongkang is being investigated for graft, making him officially the target of the country's highest-profile corruption inquiry in modern history.
The South China Morning Post first reported the decision by the Communisty Party leadership to investigate Zhou last year. A look at recent corruption investigations shows that dozens of Party and government officials with ties to Zhou have been sacked prior to the announcement of an inquiry into Zhou.