By Jessica Toonkel
NEW YORK (Reuters) - Rupert Murdoch telephoned AT&T Inc (T.N) Chief Executive Randall Stephenson twice in the last six months and talked about cable network CNN, sources briefed on the matter told Reuters on Friday.
According to one of the sources, the 86-year-old executive chairman of Twenty-First Century Fox Inc (FOXA.O) offered to buy CNN in both conversations.
Another source said Murdoch had "zero interest" in owning CNN.
Representatives of Twenty-First Century Fox, AT&T and Time Warner, CNN's parent, declined comment.
CNN has become a sticking point in antitrust approval of AT&T's $85.4 billion deal to buy Time Warner Inc (TWX.N), hatched in October 2016.
Justice Department staff have recommended that AT&T sell either its DirecTV unit or Time Warner's Turner Broadcasting unit - which includes CNN - a government official told Reuters on Thursday, in order to gain antitrust approval.
On Thursday Stephenson said he had no interest in selling CNN and that he was ready to defend the deal in court if necessary.
According to one of the sources on Friday, Murdoch called Stephenson twice, unprompted, on May 16 and Aug. 8 and on both occasions asked if CNN was for sale. Stephenson replied both times that it was not, according to the source.
It would not be the first time Murdoch has attempted to take control of CNN.
His Twenty-First Century Fox made an $80 billion offer for Time Warner in 2014 but abandoned the plan in the face of Time Warner's resistance. At that time, Fox had planned to divest CNN - which competes with Fox News - in order to avoid antitrust issues.
There is no law against a company owning two cable networks, but there is a Federal Communications Commission prohibition on owning two broadcast networks. A Fox deal with CNN could also raise antitrust concerns because of the market share that a combined company would have among cable news viewers.
"I have been called and asked if I would sell CNN by numerous people," Stephenson told the New York Times DealBook conference on Thursday. But he added: "Selling CNN makes no sense."
Fox has held talks in the last few weeks to sell most of its film and television assets to Walt Disney Co (DIS.N), CNBC reported this week, which would leave the company with its Fox News, sports programming and broadcasting stations..
Twenty-First Century Fox would sell its stake in European satellite broadcaster Sky Plc (SKYB.L) in a deal with Disney, according to CNBC's report. Fox is trying to buy the 61 percent of Sky it does not already own but the bid is strongly opposed by some lawmakers and has been subject to lengthy regulatory scrutiny.
Time Warner shares closed up 4 percent at $90.60.
(Reporting by Jessica Toonkel in New York; Additional reporting by David Shepardson in Washington; Editing by Bill Rigby)