Authorities have investigated more than 15,000 civil servants involved in 13,000 cases of commercial bribery in the last five years, a media report said Thursday.
The officials faced extra scrutiny in a national crackdown on commercial bribery, China Daily quoted the ministry of supervision as saying.
The more than 81,000 commercial bribery cases investigated between 2007 and 2011 involved a total of 22.2 billion yuan ($3.6 billion).