Beijing ( CNN ) -- On the eve of the Nobel Peace Prize award ceremony in Oslo , Norway , CNN.com and CNN International are among the websites and television networks that have been blocked in mainland China . The winner of the prize is imprisoned Chinese dissident Liu Xiaobo . What 's going on ? CNN 's Beijing Bureau Chief Jaime FlorCruz offers some insight . Q : There are reports that users in China ca n't access the CNN website and the websites of other news organizations . What 's the situation in Beijing and across mainland China ? A : CNN.com is completely blocked as of today . Because when I use [ a privately secured network ] the site works ok . But if I 'm using the normal broadband connection at home , that most Chinese have , an error message comes up . It says `` this website is not available . '' It 's sort of the standard thing that happens when a website is blocked here in China . Q : Is television news also blocked ? A : Every time our reports are broadcast about Nobel Prize winner [ Liu , who is serving an 11-year sentence in a Chinese prison for what the government called `` inciting subversion of state power '' ] the television screens black out . We are required to beam our signal through a Chinese satellite station before it is broadcast to mainland China . That creates a 12-second delay . Authorities use that time to black out specific parts of the signal . Whenever anything about WikiLeaks or the Nobel Prize is mentioned , the signal is blocked . Q : How common is this ? A : They 've been doing this many years . Usually anything having to do with the `` three Ts and one F '' -- Tibet , Taiwan , the '89 Tiananmen Square protests , and Falun Gong , a spiritual group banned in China . The process had abated for the last several months , and especially right after the Olympics . But in recent weeks we 've noticed the practice has become more frequent . But now when anything about the Nobel Prize or WikiLeaks as it pertains to China is reported , our stories are blacked out . Q : Does this occur only in mainland China , or is it in Hong Kong as well ? A : I believe it 's just mainland China , that 's what they can control . Q : How do Chinese authorities police this ? A : They watch our stories and read our stories very closely . They probably have written directives over what kinds of stories need to be censored . I doubt that people pushing the buttons know English very well . But they probably base it on certain video they see , or key words that they hear . I think it 's emblematic of how tightly controlled this is , and how sensitive authorities are about tomorrow 's award ceremony in Oslo . Q : What are the Chinese sites saying about the Nobel Prize , if anything ? A : The authorities are also blocking certain websites that may be touching on this or WikiLeaks . I think it 's safe to say that most Chinese are not aware of the [ Nobel Peace Prize winner ] . And whatever they may have read about him has been through official talking points and state commentary . An update on the blackout from Jaime FlorCruz as of 0830 GMT Friday : . We have canvassed a few Chinese people -- students , functionaries , a homemaker , a filmmaker -- and have asked them to try to click on the CNN website using their regular broadband connections at home or in school . They tell us that the international edition of CNN.com is totally blocked . When they log on to CNN.com 's U.S. edition , it loads fine until they click on any Liu Xiaobo-related stories and they get the standard notice : `` This website is not accessible . ''
WikiLeaks is currently blocked in mainland China . CNN.com is selectively blacked out by the government when broadcast to mainland Taiwan . Authorities appear to be blocking the signal during reporting on CNN International or ` This website is not accessible . winner .