What is the Big Idea?
Chinese authorities have shuttered the 42 websites and more than 210,000 posts about a major political scandal rocked the country, Agence France Presse reported.
A three-line announcement on the official Xinhua news agency came as Chinese authorities ramped up efforts to control online speculation about the purge of a top leader whose wife is suspected in the murder of a British businessman.
It did not refer to this week's dramatic developments surrounding the high-profile and populist former leader Bo Xilai, who was sacked as Chongqing party secretary last month.
But China's version of Twitter, Weibo, has taken the country by storm and have buzzed with speculation about Bo's suspension from the 25-member Politburo and the investigation of his wife for murder.
What is the Significance?
Bo was favored to join China's elite group of leaders later this year, and the dual scandal is the biggest drama to hit the Communist Party in years.
China has the world's largest online population with more than half a billion users, posing huge challenges to the government's efforts to control the information its people are able to access.
Authorities have stepped up their efforts to censor sensitive information in anticipation of political instability as the country undergoes a political transfer of power later this year.
Last month, two leftist political websites said they had been ordered to shut down for a month for "rectification" after they had "maliciously attacked state leaders" and given "absurd views" about politics.
The latest announcement of site closures came after China said last month it had shut down websites, made a string of arrests and punished two popular microblogs after rumours of a coup that followed Bo's sacking.
Authorities closed 16 websites for spreading rumours of "military vehicles entering Beijing and something wrong going on in Beijing", Xinhua said at the time.
Police arrested six people and the country's two most popular microblogs introduced posting restrictions for three days after a surge in online rumours about a coup led by China's security chief Zhou Yongkang.
In an editorial, the People's Daily, the mouthpiece of the Communist Party, pledged to punish those responsible for the "lies and speculation", but the crackdown drew swift condemnation online.