Rumors of earthquakes in different areas in China created and spread by several Internet users since the Sichuan earthquake have caused social panic and harmed social stability, according to the ministry.

The ministry has put four people under administrative detention for sending rumors via Wechat, a Chinese mobile instant messaging app with millions of users.

The ministry also launched an investigation into charity fraud that took advantage of people's sympathy for the earthquake victims.

Internet users should not create, believe, or pass on rumors, said an official with the ministry.

The ministry welcomes reports of online rumors from the public.