BEIJING - An official from Beijing's south-to-north water diversion project office is being investigated for suspected serious law violation, said the Beijing municipal supervision commission.

Zeng Fanxin, an inspector with Beijing's south-to-north water diversion project office, is being investigated by the commission.

Zeng was previously deputy head of Beijing's Shunyi district government and Party chief of the capital's Federation of Trade Unions.

Beijing is one of the beneficiaries of the middle route of the south-to-north water diversion project, which carries water through canals and pipes from the Danjiangkou reservoir in Central China's Hubei province to the north.

Supervision commissions have been established in 31 provinces, regions, and municipalities as a key reform to strengthen the country's anti-corruption drive.