The Supreme People’s Procuratorate (SPP) of China announced on Monday that it has started investigation into Sun Zhengcai, former secretary of Chongqing Municipal Committee of the Communist Party of China (CPC).

Sun, also former member of the Political Bureau of the 18th CPC Central Committee, was put under investigation on suspicion of accepting bribes.

The SPP has taken “coercive measures” against Sun, which may include summons by force, bail and detention, and further investigation is under way.