White House principal deputy press secretary Hogan Gidley struck back at CNN host Anderson Cooper on Friday, a day after having a contentious interview with the journalist, saying he would not be lectured by a member of the mainstream media who has been “lying” about President Trump.

“First of all, I'm not going to take a lecture on truth-telling from anybody in the mainstream media who has been lying about this president for the last two years, telling the American people that Donald Trump committed treason which is a crime punishable by death as you well know,” Gidley told “Ingraham Angle” host Laura Ingraham.

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On Thursday, Cooper and Gidley went back and forth over the release of the long-awaited Mueller report.

The report showed investigators did not find evidence of collusion between the 2016 Trump presidential campaign and Russia but did lay out an array of actions taken by the president that were examined as part of the investigation’s obstruction inquiry.

At one point during the interview Cooper asked Gidley if the president lied.

“No, i’m not aware of him lying. He hasn’t lied to me,” Gidley responded.

“I feel bad that you’re scared to say that your boss lied,” Cooper later added.

Gidley accused CNN of wanting accusations of collusion between the president and Russia to be true.

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“The point is, for me to sit there with CNN and listen to them, who they wanted this to be true so badly. So many in the media did, and I understand why they don't drop it,” Gidley said.

“Because if they did, they would be admitting the fact that the last two years of their life was a complete and total waste.”

Fox News' Paulina Dedaj contributed to this report.