Chinese officials have shut down 206 microblogs alleging that they were distributing pornographic and vulgar content.

According to the State Internet Information Office (SIIO), all of the accounts were registered at four of China’s largest microblogging sites ( Sina.com.cn, Sohu.com, 163.com and QQ.com), with 130 accounts set up through Sina.

“Relevant departments have criticised these sites for their slack management and have warned them to rectify their misconduct,” the statement said.

Chinese officials periodically shuts down numerous websites accusing them of spreading porn material.

The SIIO has urged the country’s microblog providers and Internet portals to fulfil their legal and social obligations and “refuse to be used as a platform to spread obscene material’’.

“The SIIO and other departments will strengthen supervision over microblogs and other technology based content in accordance with laws and regulations,” the statement said.