China's anti-graft agency says the head of the country's National Bureau of Statistics is being investigated for severe disciplinary violations, a phrase which usually refers to corruption.

The announcement posted Tuesday on the website of the Central Commission for Discipline Inspection came hours after Wang Baoan had briefed reporters at a news conference in Beijing about China's economy in 2015.

Various prominent political figures have been ensnared in President Xi Jinping's 3-year-old anti-corruption crackdown.

Wang, 52, was appointed chief of the statistics bureau in April last year. He previously served as vice minister of finance.