FILE - In this March 5, 2009 file photo, US singer Michael Jackson announces that he is set to play a series of comeback concerts at the London O2 Arena in July, which he announced at a press conference at the London O2 Arena. A Los Angeles judge on Monday, Jan. 13, 2014, denied a motion by lawyers for Jackson's mother, Katherine Jackson, to grant her a new trial in her negligent hiring lawsuit against concert promoter AEG Live LLC. (AP Photo/Joel Ryan, File)