Hillary Clinton reportedly learned about the existence of a dossier containing unverified allegations about collusion between President Trump and Russia only after after BuzzFeed News published the document, despite recent reports tying her campaign to funding it.

The former secretary of State was reportedly annoyed that the controversial report had not been shared with the public until the final days of last year's heated presidential contest, The New York Times reported Wednesday, citing two Clinton associates who discussed the matter with her.

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The then-Democratic presidential candidate was also reportedly disappointed that the FBI's investigation into ties between Trump campaign associates and Russia was not announced during the election.

The Clinton campaign as well as the Democratic National Committee have denied knowledge about the opposition research despite the news that Marc Elias, a lawyer representing both groups, helped fund the report, The Washington Post reported Tuesday.

Elias and his law firm Perkins Coie retained Fusion GPS, the private research firm behind the dossier, from April until October 2016 to investigate Trump's background and compile the dossier.

BuzzFeed News published the dossier in January. Other media outlets declined to publish the report because it was unverified.

The Post's report comes shortly after Trump questioned whether Democrats, Russia or the FBI may have funded the firm's opposition research.

“Workers of firm involved with the discredited and Fake Dossier take the 5th. Who paid for it, Russia, the FBI or the Dems (or all)?” Trump tweeted last week.

In August, White House press secretary Sarah Huckabee Sanders appeared to blame the "phony dossier" on Russia and Democrats.

House Republicans overseeing congressional committees had tried to pressure Fusion GPS to identify who paid the firm for the dossier, but the firm has reportedly resisted their efforts and pointed to client confidentiality.