Dec.11 -- Chinese authorities have detained Haze Fan, who works for the Bloomberg News bureau in Beijing, on suspicion of endangering national security. Fan was seen being escorted from her apartment building by plain clothes security officials on Monday. "We have been doing our best to try and find out exactly where she is, what's happened, to try and get her back," Bloomberg News Editor-in-Chief John Micklethwait said on "Bloomberg Surveillance."