BEIJING -- China's state supervisory commission will share responsibility and organization with the Central Commission for Discipline Inspection (CCDI) of the Communist Party of China, an official said Monday.

Xiao Pei, vice minister of supervision, made the comments at a press conference after a plenary session of the CCDI concluded on Sunday, explaining the two bodies will share institution and staff.

The Ministry of Supervision also currently shares responsibility and organization with the CCDI.

The country's supervisory system will be put into four tiers: national, provincial, city and county, Xiao said, noting that it is a major political system reform.

China's top legislature last month endorsed a pilot program to reform the supervisory system by setting up powerful supervisory commissions with full coverage of all official staff.

According to the pilot, the new supervisory commissions will integrate government supervision departments and corruption prevention bureaus, as well as divisions for handling bribery, dereliction of duty and prevention of duty-related crimes under the people's procuratorates.

Xiao said the new commissions are powerful anti-graft bodies, which will supervise not only functionaries in Party organs and legislative, administrative and judicial bodies, but also members in non-Communist parties and the All-China Federation of Industry and Commerce.

In addition, the commissions will supervise executives in state-owned enterprises and government-sponsored institutions as well as those in mass organizations.