曾庆红
During the investigation, Sun was said to have informed on a number of high-ranking officials in Chongqing, causing unprecedented fallout on the megacity's political scene shortly prior to the 19th Party Congress. While the municipality held elections for delegates to the congress in May, by the time a final list of delegates were released in late September, as many as 14 out of 43 of the initially selected list were surreptitiously removed, including five members of the municipal party standing committee. Mostly prominently, Chongqing party organization head Zeng Qinghong (not the former Vice President) was believed to be held for investigation.