President TrumpDonald John TrumpTrump appears to confirm deal on Chinese firm ZTE Judge rejects Manafort's attempt to throw out some charges Dem: Trump’s policy of separating children, parents at border ‘would shock Jesus’ MORE's eldest son on Friday night declared that the ongoing probe into ties between the Trump campaign and Russia during the presidential contest is a "witch hunt."

“Obviously, this has been a witch hunt, probably the greatest since the Salem witch trials,” Donald Trump Jr.Donald (Don) John TrumpTrump Jr.: Instagram warning says my name 'encourages' harmful behavior Trump resort in Scotland pays women less than men: report Dem senator: Trump Jr. may have given 'false testimony' about meeting with foreign nationals MORE told Fox News's Tucker Carlson. 

“The interesting thing about it is the only collusion, the only shadiness, the only thing that has been discovered is what the prior administration, the [Democratic National Committee] and all of them have done," he asserted.

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The comments follow a push by Republicans for the release of a memo that GOP lawmakers say will reveal high-level government abuse surrounding the probe into allegations of collusion between the Trump campaign and Russia's election meddling.

Trump Jr. has become a subject in the federal and congressional probes into the matter due to his June 2016 meeting with a Russian lawyer and other campaign officials at Trump Tower.

Emails revealed the president's son agreed to the meeting after he was told he would receive damaging information on then-Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonElection fears recede for House Republicans To woo black voters in Georgia, Dems need to change their course of action Trump lawyer touts petition to stop 'soft coup' against Trump MORE

President Trump has referred to the probe as "the greatest witch hunt in American political history."