The Cyberspace Administration of China, closed microblog, WeChat and QQ accounts, a statement said on Friday.

These accounts were used to release porn information and invite people to solicit prostitution, it added.

Earlier on Wednesday, China's anti-pornography authorities said that 62 people were detained for using social networking services to organise prostitution or spread pornographic content.  

China launched the internet cleansing campaign in April this year in an effort to eliminate content related to pornography and violence in the cyberspace.

Many of these accounts were shut down by internet companies such as Sina and Tencent after an internal "self-check", and many were reported by the public. The office also organised special inspections, the statement said.