Last year, the Communist Party of China's discipline inspection agencies punished about 1.82 lakh officials nationwide, 13.3 per cent more than in 2012, Huang Shuxian, deputy secretary of the Communist Party of China (CPC) for Discipline Inspection (CCDI) told media here today.
This included eight high-profile officials, he said, adding that 23 other top rank officials are still under investigation.
Of the 1.82 lakhs officials, about 1.50 lakhs were subject to party discipline punishment and 48,900 were subject to administrative punishment, he said.
Zhou was the member of the nine-member Standing Committee of the CPC which ruled the country under the leadership of former President Hu Jintao.
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Reports say that Zhou himself would be arrested as investigations against him neared completion.
If arrested, he would be the first highest-level retired CPC official to be prosecuted in China in recent years, breaking away from the tradition of providing immunity to the retired leaders from prosecution.
He has made the campaign against corruption his main plank ever since he took over power last year, saying that party's hold on the country would collapse if graft continued unchecked.
Besides handing over a life sentence to disgraced CPC leader Bo Xilai, several top leaders, including the former Railway Minister Liu Zhijun was handed down punishments ranging from suspended death sentences to life imprisonments.
"As the central leadership asked, discipline inspection agencies have put anti-corruption as a priority and worked to bring down both 'tigers' and 'flies'," Huang said.