FILE - In this Oct. 1, 2015 file photo, host Bill O'Reilly of "The O'Reilly Factor" on the Fox News Channel, poses for photos in the set in New York. While advertisers may be fleeing Bill O'Reilly's "no spin zone" on Fox News Channel, viewers are remaining loyal. "The O'Reilly Factor" averaged 3.71 million viewers over five nights last week, the Nielsen company said. That's up 12 percent from the 3.31 million viewers he averaged the week before and up 28 percent compared to the same week in 2016. (AP Photo/Richard Drew, File)
The sources say that a legal team from the same firm that investigated former Fox News Chairman and CEO Roger Ailes is now investigating O’Reilly’s past and present. They’re looking into recent sexual harassment claims made by Fox News guest Wendy Walsh, according to the report.