The top Democrat on the House Oversight and Government Reform Committee said Thursday that memos drafted by former FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE about his conversations with President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE corroborate his testimony before Congress.

In a statement Thursday night obtained by MSNBC, Rep. Elijah Cummings Elijah Eugene CummingsBlack GOP candidate accuses Behar of wearing black face in heated interview Overnight Health Care: US won't join global coronavirus vaccine initiative | Federal panel lays out initial priorities for COVID-19 vaccine distribution | NIH panel: 'Insufficient data' to show treatment touted by Trump works House Oversight Democrats to subpoena AbbVie in drug pricing probe MORE (D-Md.) said that Comey's memos, which were sent to lawmakers Thursday night, "provide strong corroborating evidence of everything he said about President Trump."

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Trump "wanted [Comey's] personal loyalty," and "wanted to end the Russia investigation" when he fired the FBI director last year, Cummings says.

"President Trump's interference was a blatant effort to deny justice," he added, "and Director Comey was right to document it as it happened."

Elijah Cummings: "Director Comey’s contemporaneous memos provide strong corroborating evidence of everything he said about President Trump." pic.twitter.com/sjzJuQAmVq — Kyle Griffin (@kylegriffin1) April 20, 2018

Democrats have pointed to Trump's 2017 firing of Comey as an attempt to obstruct the FBI's investigation into possible collusion between the Trump campaign and Russia, which the special counsel office is now investigating as possible obstruction of justice.

Trump denied this week that Comey's firing was related to the Russia investigation, apparently walking back previous comments he made to the contrary to NBC's Lester Holt last year.

"Slippery James Comey, the worst FBI Director in history, was not fired because of the phony Russia investigation where, by the way, there was NO COLLUSION (except by the Dems)!" Trump wrote on Twitter Wednesday.

Comey is currently on a national media tour to promote his book, "A Higher Loyalty," which hit bookstores this week and quickly rose to the top of Amazon's bestseller list.

The Trump administration and Republicans have responded to Comey's media tour by casting the former FBI director as dishonest, with almost a dozen lawmakers calling for the Justice Department to open criminal proceedings into Comey and others in a letter this week.