Jiang Jiemin, former head of state-owned regulator Assets Supervision and Administration Commission, and top provincial Communist Party of China (CPC) official Li Chuncheng were both accused of accepting bribes and abuse of power, China's top prosecutor said.
The Chinese Supreme People's Procuratorate (SPP) said it has completed the probe into Jiang's case and filed charges with the Hanjiang Intermediate People's Court today.
Prosecutors accuse Jiang of taking bribes, abuse of power and owning property that he could not possibly have afforded on his legitimate earnings, state-run Xinhua news agency reported.
Jiang's actions caused major losses to state assets, an SPP statement said without providing any details on how the prosecution will progress.
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The trials will pave the way for a court appearance by Zhou, the most senior official to fall in an anti-corruption crackdown spearheaded under President Xi Jinping's regime.
The SPP has concluded investigation into Li's case too and filed charges with Xianning Intermediate People's Court today.
Prosecutors believe Li, also seen as a close associate of Zhou, took advantage of his position to seek profit for others, accepted huge amounts of money and abused his power, resulting in substantial state losses.
The anti-corruption campaign was stepped up after Chinese President Xi Jinping came to power in 2013.