Former CIA Director John Brennan John Owen BrennanJournalism or partisanship? The media's mistakes of 2016 continue in 2020 Comey on Clinton tweet: 'I regret only being involved in the 2016 election' Ex-CIA Director Brennan questioned for 8 hours in Durham review of Russia probe MORE said Sunday that the so-called Steele dossier containing allegations about President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s ties to Russia was not a factor in the intelligence community's assessment that Moscow interfered in the 2016 election.

“I was unaware of the provenance of it as well as what was in it. And it did not play any role whatsoever in the intelligence community’s assessment that was done, that was presented to then-President Obama and then-President-elect Trump,” Brennan said on NBC's “Meet The Press.”

The dossier, compiled by former British spy Christopher Steele, was funded in part by the Democratic National Committee and Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE’s presidential campaign.

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Brennan, who led the CIA from 2013-2017, said it was up to the FBI to see if it could verify the information in the dossier.

"If the Russians were involved in something like that, directed against individuals who are aspiring to the highest office in this land, there was an obligation on the part of the FBI to seek out the truth on it," he said.

“There were things in that dossier that made me wonder whether they were, in fact, accurate and true,” Brennan said. "Just because it was unverified doesn’t mean it wasn’t true."

The dossier was at the center of a Republican-crafted memo that was released Friday alleging the Justice Department used information from it to obtain surveillance warrants on Carter Page, a member of the Trump transition team and a former Trump campaign adviser.

Republicans have used the memo to accuse the Justice Department of bias against Trump, while Democrats have said a memo of their own will show the dossier was just one piece of the warrant application.