President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE ratcheted up his attacks on Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsRoy Moore sues Alabama over COVID-19 restrictions GOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs MORE on Saturday, tweeting that Sessions was "scared stiff" and "Missing in Action" in defending him amid special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's probe into possible ties between the Trump campaign and Russia.

Trump slammed Christopher Steele, the former British intelligence officer at the center of the Trump dossier scandal, and the Department of Justice (DOJ) and once again slammed Mueller's investigation as a "witch hunt."

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"The big story that the Fake News Media refuses to report is lowlife Christopher Steele’s many meetings with Deputy A.G. Bruce Ohr and his beautiful wife, Nelly. It was Fusion GPS that hired Steele to write the phony & discredited Dossier, paid for by Crooked Hillary & the DNC," Trump tweeted.

"Do you believe Nelly worked for Fusion and her husband STILL WORKS FOR THE DEPARTMENT OF 'JUSTICE.' I have never seen anything so Rigged in my life. Our A.G. is scared stiff and Missing in Action. It is all starting to be revealed - not pretty. IG Report soon? Witch Hunt!" he wrote.

The big story that the Fake News Media refuses to report is lowlife Christopher Steele’s many meetings with Deputy A.G. Bruce Ohr and his beautiful wife, Nelly. It was Fusion GPS that hired Steele to write the phony & discredited Dossier, paid for by Crooked Hillary & the DNC.... — Donald J. Trump (@realDonaldTrump) August 11, 2018

....Do you believe Nelly worked for Fusion and her husband STILL WORKS FOR THE DEPARTMENT OF “JUSTICE.” I have never seen anything so Rigged in my life. Our A.G. is scared stiff and Missing in Action. It is all starting to be revealed - not pretty. IG Report soon? Witch Hunt! — Donald J. Trump (@realDonaldTrump) August 11, 2018

Trump’s attack on Saturday was likely prompted by murmurings that the Republican chairman of the House Judiciary Committee is readying subpoenas for people connected to the controversial Steele dossier.

Chairman Bob Goodlatte (R-Va.) is reportedly preparing subpoenas for DOJ official Bruce Ohr, his wife, Nellie Ohr, and Fusion GPS co-founder Glenn Simpson, sources told The Hill this week.

Bruce Ohr is facing scrutiny from Republicans for his contacts with Simpson and Steele during the presidential campaign, the news of which prompted Trump allies to demand a special counsel investigation into the DOJ and FBI in December.

Simpson hired Steele to help produce the dossier that made a series of salacious allegations about Trump's connections with Russia.

Nellie Ohr worked for Fusion GPS during the presidential campaign — a fact that Republicans have promoted as a possible link between the DOJ and the opposition research firm.

Trump has gone after Sessions for the Russia probe before, saying earlier this month that the attorney general should stop the investigation "right now."

"Attorney General Jeff Sessions should stop this Rigged Witch Hunt right now, before it continues to stain our country any further," Trump tweeted on Aug. 1.

Trump is also known to harbor hostility toward Sessions for recusing himself in the investigation.

“The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else. So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion!” the president tweeted in June.