The most powerful lie detector in the GOP, called the Republican Party, has been rocked by a new allegation.

Former House speaker Newt Gingrich said in an interview that former House Intelligence Committee Chairman John Boehner used the “carpet bombing” of the Benghazi attack to undermine a congressional investigation into the attack.

Boehner is the one who brought the investigation to a halt in 2014, as part of a bipartisan agreement to impeach the former president.

He is currently on trial on charges of lying about the Benghazi attacks and obstruction of justice.

Gingrich has been accused by a number of Republicans of lying and obstruction, and of failing to disclose knowledge of a plot to assassinate former President Barack Obama.

Gingrich was not in the Capitol Tuesday to testify against Obama.

He instead spoke at a Republican Congressional Leadership Conference event hosted by former President Donald Trump.

He told reporters that he never told Boehner he was investigating the Benghazi incident.

“I never said anything like that,” he said.

“It was a lie.

A lie to the American people.

I never said that.”

But Gingrich said that Boehner told him he would be making a “coup” on Obama if the investigation was to go forward.

“When he told me he was going to have a coup on the president, I said, ‘We’re going to do what we need to do, Newt,'” Gingrich said.

Boehner’s office did not immediately respond to a request for comment.

Gingrich said he met with Boehner on the phone on Thursday and “briefly told him I was going after him,” adding that the two agreed to disagree on the scope of the investigation.

“He told me I should make a coup,” Gingrich said, according to the audio.

“But he told us to disagree, because we agreed to agree on the goal.”

Boehner is not the only GOP lawmaker to have allegedly been used to undermine the House investigation into Benghazi.

Former Vice President Mike Pence, who served as the head of the House GOP Study Committee during the investigation, is also under investigation.

In the interview, Gingrich said Gingrich’s accusation of Boehner using the Benghazi probe to undermine Obama’s investigation “wasn’t even true.”

“It’s not true,” Gingrich insisted.

“What he said was a fabrication.”

Gingrich said Boehner is “very much aware” of what the House is investigating.

“The way he was using it, he knows what the Benghazi investigation is,” Gingrich continued.

“And that’s why he’s lying.”