More than 300 NBS staff have also been asked to return 3.23 million yuan (USD 500,000) they made by selling annual reports and providing data to affiliates, the Central Commission for Discipline Inspection (CCDI) -- the Communist party's internal corruption watchdog -- said on its website.
The news comes just months after the former head of the NBS was sacked in a corruption probe -- announced shortly after he appeared at a briefing on China's economy when he reiterated that the country's gross domestic product calculations were reliable.
Critics say it can be subject to political manipulation in a country where the ruling party depends on growth for legitimacy.
The CCDI statement also said the statistics agency had failed to keep pace with changes in the economy, and noted problems with sales of handheld data-collection devices.