President Donald Trump sought to end the federal investigation into former national security adviser Michael Flynn, asking then-FBI Director James Comey to shut down the probe, according to a memo the former director reportedly wrote after the meeting.

"I hope you can let this go," Trump told Comey, according to the document – the Tuesday evening disclosure of which marked the latest in a series of apparently damning revelations involving the president.

The New York Times reported on the memo's contents and Trump's alleged attempt to intervene in the federal probe during a private exchange with Comey in the Oval Office in February. The remark was said to have referred to an investigation into Flynn that is part of a broader inquiry into Russia's interference in the 2016 election and its ties to members of the Trump team.

Trump's conversation with Comey occurred a day after Flynn's ouster for misleading Vice President Mike Pence about a discussion he had with Russia's ambassador to the United States. Comey himself was abruptly fired last week, a decision Trump has attributed to "this Russia thing," which he called a "made-up story."

"I hope you can see your way clear to letting this go, to letting Flynn go," the president reportedly told Comey, according to the memo. "He is a good guy. I hope you can let this go."

The Times reported that Comey, who was known to document conversations he thought might later be questioned, shared the document with senior FBI officials and some close associates.

The White House, in a statement, rejected the memo's version of events.

"While the president has repeatedly expressed his view that General Flynn is a decent man who served and protected our country, the president has never asked Mr. Comey or anyone else to end any investigation, including any investigation involving General Flynn," the statement said. "The president has the utmost respect for our law enforcement agencies, and all investigations. This is not a truthful or accurate portrayal of the conversation between the president and Mr. Comey."

Officials also pointed out that FBI Director Andrew McCabe testified before the Senate last week that there had been “no effort to impede our investigation to date.”

The revelation comes four days after Trump called-out Comey in a post on Twitter, writing "James Comey better hope that there are no 'tapes' of our conversations before he starts leaking to the press!" That was followed by a report in The Washington Post on Monday that said the president shared highly classified material provided by an ally during a meeting with Russia's foreign minister and its ambassador to the U.S.

Democrats were quick to seize on the latest report, with Senate Majority Leader Charles Schumer of New York raising the issue on the Senate floor.

“The country is being tested in unprecedented ways," Schumer said. "I say to all of my colleagues in the Senate: History is watching.”

Rep. Adam Schiff, California Democrat and ranking member of the House intelligence committee investigating the Trump team's ties to Russia, said Comey needs to testify about the latest disclosure, no matter what committee he appears before.

"From my point of view – I’m not being proprietary about this – of course I’d love him to come before the intelligence committee. But either way, he needs to come back before the Congress and I think share with the public what conversations he had with the president that may bear on whether there was any effort to obstruct the investigation or impede it in any way.

But even the GOP expressed an interest in having Comey present his version of the exchange before lawmakers.

Rep. Jason Chaffetz of Utah, the House Oversight Committee chairman, tweeted Tuesday he was "going to get the Comey memo, if it exists."

"I need to see it sooner rather than later," he wrote." I have my subpoena pen ready."

Sen. Lindsey Graham of South Carolina, chairman of a Senate Judiciary subcommittee looking into Trump's Russia ties, told reporters he “asked Comey to come before the Judiciary Committee to tell his side of the story."

“I think it would be good for him if he did," Graham said. "It would be good for the country.”

Asked if he would try to obtain Comey's memo, Sen. Richard Burr of North Carolina, chairman of the Senate intelligence committee, said the "burden is on The New York Times."