President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE met with a former Ukrainian diplomat last week in an attempt to get information to hurt Democrats.

Giuliani told The Washington Post that he met with Andrii Telizhenko, who has reportedly made unproven assertions that the Democratic National Committee worked with the Kiev government in 2016 to find information on then-Trump campaign chairman Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE, which the DNC denied.

“He was in Washington and he came to New York, and we spent most of the afternoon together,” Giuliani told the Post, but declined to say what they discussed.

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“I can’t tell you a thing about the meeting,” he said. “When I have something to say, I’ll say it.”

Telizhenko confirmed the meeting to the Post but did not go into detail.

"We spoke on U.S.-Ukraine relations and politics in D.C. and Ukraine,” he said.

The previously undisclosed meeting follows other moves made by Giuliani in an attempt to hurt Democratic 2020 candidates.

Giuliani told The New York Times earlier this month that he planned to travel to Ukraine to ask the country's president-elect to investigate the origin of the federal Russia probe as well as former Vice President Joe Biden's past influence on the country.

"We’re not meddling in an election, we’re meddling in an investigation, which we have a right to do,” he said at the time.

In 2016, Biden reportedly threatened to withhold $1 billion in U.S. loan guarantees unless Ukraine removed a top prosecutor, who was later voted out. Biden’s son, Hunter Biden, reportedly served on the board of an energy company that the prosecutor had been looking into.

Giuliani later canceled his trip and accused Democrats of trying to "spin" the move.