BEIJING, Jan. 29 -- China's disciplinary organs punished 232,000 officials at all levels in 2014, a yearly increase of 30 percent.

The figures were revealed in a work report for the fifth plenary session of the 18th CPC Central Commission for Discipline Inspection (CCDI) held earlier this month. The report was made public Thursday.

Underlining an intensified disciplinary inspection campaign nationwide, a total of 2.72 million whistle-blowing letters and complaints by citizens were received by disciplinary organs last year, up from 1.95 million in the previous year.

There were 226,000 cases filed as a result of the complaints, with 218,000 closed. The cases led to 232,000 officials being given Party or administrative punishment, with 12,000 people transferred to judicial organs on criminal charges.

Around 55,000 officials were prosecuted in 2014 for occupational crimes including defalcation, bribery and negligence of duty.