Rupert Murdoch has taken to Twitter to distance himself from continuing rumours of a friendship between his daughter Elisabeth and David Cameron.
The media mogul said he had been asked about their relationship in the unexpected post.
He wrote: “Asked is my daughter friend of David Cameron? Don’t know, but hope not. Really not my business.”
The post, in the early hours of Monday, may have been sent from the US, where Mr Murdoch previously said he was visiting his daughter at a children's summer camp.
The Leveson Inquiry exposed the close relationships enjoyed by politicians and media executives in the so-called “Chipping Norton set”, including Ms Murdoch and her husband, the PR executive Matthew Freud.
Asked is my daughter friend of David Cameron? Don't know, but hope not. Really not my business.— Rupert Murdoch (@rupertmurdoch) July 28, 2014
The Prime Minister attended his 50th birthday party in November last year alongside George Osborne, despite publicly distancing himself from former News International executives in the wake of the phone hacking scandal and “horsegate”.
In 2012, Mr Murdoch told the Leveson Inquiry he had met the Conservative Party leader at “family picnics” at his daughter’s house.
Video: Murdoch recalls impressions of Cameron at Leveson in 2012
While he was the Leader of the Opposition in 2008, Mr Cameron also accepted free flights on Mr Freud’s private jet to hold talks with Mr Murdoch on a luxury yacht off a Greek island.
Mr Cameron also attended Ms Murdoch’s 40th birthday party in the Cotswolds, where Tony Blair, David Miliband, Rebekah Brooks and Andy Coulson were among the guests.
Ms Murdoch, 45, left senior positions in her father’s corporation to found her own production company, Shine, in 2001.
She sold it to News Corporation in 2011 for £415 million and is still the chairman of the company, having reportedly turned down a seat alongside her brothers and father on the News Corp board.