<text>  An audio recording offering further evidence Fox News host Bill OReilly lied in his book Killing Kennedy has been aired by CNN. In his book, OReilly claimed he heard the blast when George de Mohrenschildt - an associate of President John F. Kennedys assassin Lee Harvey Oswald - killed himself with a shotgun in Florida. CNNs Reliable Sources played an audio recording from 1977 where a young OReilly is heard talking about traveling to Florida to cover de Mohrenschildts suicide. An audio recording released by CNN proves Bill OReilly 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 Kennedys death . OReilly, 65, was covering the JFK assassination for Dallas, Texas, television station WFAA at the time. In his book, OReilly wrote: In March of 1977 a young reporter knocked on the door of de Mohrenschildts daughters home. He heard the shotgun blast that marked the suicide of the Russian. That reporters name is Bill OReilly. 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, OReilly can be heard calling investigator Gaeton Fonzi to confirm de Mohrenschildts suicide. He also talks about coming to Florida, meaning there is no way he could have been on de Mohrenschildts doorstep to hear the shotgun blast. In the tape, OReilly said: Im coming down there tomorrow. Im coming to Florida. Im gonna try to get a night flight out of here, if I can. But I might have to go tomorrow morning. Fox released figures showing OReillys weekly audience is up 11 per cent compared with last year . Morley told Media Matters Reillys claim about overhearing the gunshot in de Mohrenschildts suicide is just not true. He added: It is what these guys all do, they inject themselves into a dramatic situation. OReilly was chasing this story, but he wasnt 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 OReillys a phony, theres no other way to put it. He was not up on the porch when he heard the gunshots, he was in Dallas. He wasnt 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 OReilly and his bestseller Killing Kennedy and were 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 OReilly 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 OReilly, who is no stranger to calculated onslaughts. On Friday, Fox News released figures showing OReillys weekly audience grew by 11 per cent compared with the same period last year, the Washington Post reported. 