An audio recording offering further evidence Fox News host Bill O'Reilly lied in his book Killing Kennedy has been aired by CNN . In his book , O'Reilly claimed he heard the blast when George de Mohrenschildt - an associate of President John F. Kennedy 's assassin Lee Harvey Oswald - killed himself with a shotgun in Florida . CNN 's Reliable Sources played an audio recording from 1977 where a young O'Reilly is heard talking about traveling to Florida to cover de Mohrenschildt 's suicide . An audio recording released by CNN proves Bill O'Reilly ( above ) lied in his best-selling book Killing Kennedy . The Fox host claimed in Killing Kennedy , ( right ) that in 1977 he 'heard ' the fatal shotgun blast in the suicide of George de Mohrenschildt ( left ) who gave testimony at the investigation into President Kennedy 's death . O'Reilly , 65 , was covering the JFK assassination for Dallas , Texas , television station WFAA at the time . In his book , O'Reilly wrote : 'In March of 1977 a young reporter knocked on the door of de Mohrenschildt 's daughter 's home . 'He heard the shotgun blast that marked the suicide of the Russian . 'That reporter 's name is Bill O'Reilly . ' The recording , which was originally published by former Washington Post reporter and author Jefferson Morely on his website JFKFacts.org in 2013 , seems to prove that claim is false . In the high-quality recording CNN aired on Sunday , O'Reilly can be heard calling investigator Gaeton Fonzi to confirm de Mohrenschildt 's suicide . He also talks about coming to Florida , meaning there is no way he could have been on de Mohrenschildt 's doorstep to hear the shotgun blast . In the tape , O'Reilly said : ' I 'm coming down there tomorrow . ' I 'm coming to Florida . ' I 'm gon na try to get a night flight out of here , if I can . 'But I might have to go tomorrow morning . ' Fox released figures showing O'Reilly 's weekly audience is up 11 per cent compared with last year . Morley told Media Matters Reilly 's claim about overhearing the gunshot in de Mohrenschildt 's suicide is 'just not true ' . He added : 'It is what these guys all do , they inject themselves into a dramatic situation . ' O'Reilly was chasing this story , but he was n't there , he made it sound like he was more on the scene than he was , it was show business . ' Former WFAA reporter Tracy Rowlett echoed those sentiments . He said : 'Bill O'Reilly 's a phony , there 's no other way to put it . 'He was not up on the porch when he heard the gunshots , he was in Dallas . 'He was n't traveling at that time . ' Fox News did not comment about the matter and referred Daily Mail Online to book publisher Henry Holt & Co. Henry Holt spokesperson Patricia Eisemann said : 'We fully stand behind Bill O ’ Reilly and his bestseller Killing Kennedy and we ’ re very proud to count him as one of our most important authors . 'This one passage is immaterial to the story being told by this terrific book and we have no plans to look into this matter . ' A Fox News spokesperson previously told Daily Mail Online : 'Bill O'Reilly has already addressed several claims leveled against him . 'This is nothing more than an orchestrated campaign by far left advocates Mother Jones and Media Matters . 'Responding to the unproven accusation du jour has become an exercise in futility . FOX News maintains its staunch support of O'Reilly , who is no stranger to calculated onslaughts . ' On Friday , Fox News released figures showing O'Reilly 's weekly audience grew by 11 per cent compared with the same period last year , the Washington Post reported .
Fox News host has said in books and on television he 'heard ' George de Mohrenschildt commit suicide with a shotgun at a Dallas home in 1977 . In audio recording he can be heard asking if de Mohrenschildt was dead . It is believed O'Reilly , 65 , was actually in Florida at the time of the suicide . De Mohrenschildt was a friend of JFK assassin Lee Harvey Oswald . Ex-colleague said ' O'Reilly 's a phony , there 's no other way to put it ' Publisher said 'passage is immaterial ' to the story being told by book .