On his Twitter posts, Rupert Murdoch has remained oddly silent about the latest developments involving News Corp's hacking scandal(s) in the U.K. While mentioning the latest market moves by Facebook and Google and remarking, "Things are buzzing," Murdoch today (Friday) said nothing at all about the buzz over reports on Thursday that a crucial email exchange in which his son James was told about widespread hacking by company lawyers was deleted from his computer after the scandal broke. Nor is there any mention about another report that police are investigating the possibility that reporters for Murdoch's London Times had hacked into an email account of an anonymous blogger who turned out to be a police officer. The Leveson inquiry, which is looking into the telephone hacking incidents as part of an overall probe of journalistic ethics in the U.K., has summoned the newspaper's editor, James Harding, to answer questions about the allegations. In a letter to Scotland Yard, Tom Watson, the member of Parliament who has spearheaded the hacking investigation, said, "I must ask that you investigate computer hacking at The Times . In so doing you will also be able to establish whether perjury or conspiracy to pervert the course of Justice have also occurred."