O'Reilly has maintained his innocence.
Executive chairman of 21st Century Fox, Rupert Murdoch had initially resisted the idea of removing one of Fox News Channel's biggest on-air assets, according to reports, however, the news Wednesday indicates his opinion may have changed. The channel said it was focusing on presenting its 2018 programming to advertisers and wasn't making decisions beyond that for now.
O'Reilly is a best-selling author, and his history-focused "Killing" series - including Killing Lincoln and Killing Kennedy - has been adapted into TV movies. Eastern time slot, Fox News said.
Fox is preparing to end its relationship with the host of "The O'Reilly Factor" following a wave of sexual harassment allegations, the Wall Street Journal reported.
Early on, Fox News appeared willing to stand behind O'Reilly, but that became more hard to do since The New York Times published an April 1 story detailing $13 million in payouts by Fox and O'Reilly to women accusing him of sexual harassment.
"I'm not going away", said Lisa Bloom, attorney for the latest accuser and another woman who alleges her career stalled because she spurned O'Reilly's advances. He thanked his viewers and noted the success Fox had achieved.
At 7 p.m. EDT, Martha MacCullum remains in place. The O'Reilly Factor host was sacked from his job this morning.
Sean Hannity will keep his current time slot at 10:00 p.m.More news: The latest from the Shanghai auto show
O'Reilly has been enmeshed in controversy since the start of this month after The New York Times reported five women were paid about $US13 million ($A17 million) in exchange for agreeing not to pursue litigation or speak about the accusations.
Fox's parent company, 21st Century Fox, said on April 9, after Walsh had called the hotline, that it was opening an investigation into O'Reilly's conduct. He was scheduled to return Monday.
O'Reilly, a devout Catholic, has not commented on the split but was photographed shaking Pope Francis' hand in Rome on Wednesday.
Six women, all either employees or guests of the show, claimed O'Reilly subjected them to sexual harassment, verbal abuse and lewd behavior spanning from 2012-2016.
O'Reilly is now on vacation from his show. After 21 years on air, Fox News has fired the cantankerous talking head after his history of alleged sexual harassment came to light.
Over 60 advertisers removed their spots from the show in the wake of the settlements report from the the Times.
To be clear, O'Reilly has denied the allegations.