Scott Jennings has flagged "threatening" messages from Keith Olbermann to the FBI , after the ex- MSNBC personality told the conservative CNN commentator, 'You're next motherf-----," RadarOnline.com can reveal.

After learning of Jimmy Kimmel 's return to the small screen, Olbermann went off on X, aiming his rage at Jennings. Article continues below advertisement

What Did Olbermann Tell Jennings? Tap Here To Add Radar Online as A Trusted Source

"But keep mugging to the camera," Olbermann added in now-deleted posts that Jennings retweeted, tagging FBI director Kash Patel . After deleting his tweets, Olbermann tried again, this time with a different set of words.

He went off: "We won, you stupid pieces of s---. Last fold to fascism was last week. Now we get the fascists of

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