Rupert Murdoch's British television news channel Sky News has admitted hacking emails on two separate occasions. <br /><br />The latest revelations are likely to increase scrutiny of journalistic ethics in all arms of Murdoch's media empire.<br /><br />It is already the focus of three investigations in the United Kingdom over the behaviour of its newspaper arm, News International.<br /><br />Al Jazeera's Nadim Baba reports from London, in the United Kingdom.
