A senior anti-corruption official of China's Communist Party says the party has investigated nearly 5 million members over corruption allegations in the last decade.

The party's Central Commission for Discipline Inspection held a briefing on Monday on the sidelines of the party's national congress. It explained their achievements over the past 10 years.

They said more than 4.64 million members have been probed for possible corruption and other lapses of discipline.

Xiao Pei, deputy secretary of the commission, pledged to continue the crackdown on corruption among party and government leaders. Xiao said the party is determined to win a fight against corruption by maintaining discipline.

The anti-corruption campaign has been one of Chinese President Xi Jinping's key policies. It is said to have helped strengthen his political base.

Former members of the party leadership and emerging next-generation leaders were among those targeted in the anti-graft drive.

Xi -- who is expected to secure a third term as party leader -- appears determined to further solidify his grip on power. Xi said in a report that the party will never rest in its fight against corruption.