They put up online announcements on Saturday suspending the comment function from March 31 to April 3 to clean up rumours and other illegal information spread through microblogging networks, following a crackdown for carrying postings, including pictures of battle tanks rolling down streets in Beijing, that sparked speculation of a coup.
The speculation went viral with rumours of infighting in the Communist Party leadership following the sacking of a party leader Bo Xilai.
Chinese authorities have closed 16 websites and detained six people responsible for "fabricating or disseminating online rumours".
Beijing police also arrested 1,065 suspects and deleted more than 208,000 "harmful" online messages as part of an intensive nationwide crackdown on Internet-related crimes conducted since mid-February, according to the state run Xinhua news agency.
This is perhaps for the first time the Chinese government which was apprehensive about the emergence of the alternate media, cracked down on them, though a series of measures to regulate them were announced in the recent months.