No one is immune to disciplinary investigation or court trials for corruption, including the deputies of the people's congresses at all levels, Fu Ying, spokeswoman for the fourth session of the 12th National People's Congress, said on Friday.

At a press briefing ahead of a national meeting of the top legislative body, Fu said 27 deputies have been removed from their posts and 43 of them have resigned since the members of the 12th National People's Congress were elected in February 2013.

A large number of those deputies were found with "violations of Party discipline and laws", a phrase that commonly refers to corruption.

The congress is about to amend the Law on Administrative Supervision this year and it is working on drafting a law on judicial assistance in criminal matters to facilitate the nationwide anti-corruption efforts, Fu said.

An hour before press briefing, the Central Commission for Discipline Inspection of the Communist Party of China, the top anti-graft watchdog, announced the investigation of a senior national legislator.

Wang Min, vice-chairman of the Education, Science, Culture and Public Health Committee of the 12th National People's Congress, formerly Party chief of Northeast China's Liaoning province, is being investigated over suspected serious violation of discipline.