Former Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE press secretary Brian Fallon said Tuesday that funding for a dossier of damaging information on President Trump's campaign was "money well spent" after reports surfaced that the dossier was paid for by the Clinton campaign and the Democratic National Committee.

"I have no idea what Fusion or Steele were paid but if even a shred of that dossier ends up helping Mueller, it will prove money well spent," Fallon said in a string of late night tweets on Tuesday.

I have no idea what Fusion or Steele were paid but if even a shred of that dossier ends up helping Mueller, it will prove money well spent — Brian Fallon (@brianefallon) October 25, 2017

A lawyer representing both the DNC and Clinton campaign sought help from the opposition research group Fusion GPS to gather information on Trump, according to a Washington Post report.

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The firm hired former British intelligence officer Christopher Steele to aid in the effort, which led to the publishing of a 35-page document of unverified allegations against the Trump campaign and its ties to Russia.

Special counsel Robert Mueller, who is leading a federal probe into possible collusion between the Trump campaign and Russia in the 2016 election, reportedly interviewed Steele.

Fallon went on to praise Marc Elias, the lawyer who retained the research group, for his work during the campaign.

"And all this time I thought was merely best election lawyer & voting rights lawyer in U.S.," Fallon said, adding that Elias was probably "just being a good lawyer" for not revealing the DNC's connection to the dossier.

And all this time I thought @marceelias was merely best election lawyer & voting rights lawyer in U.S. Proud to have shared foxhole with him — Brian Fallon (@brianefallon) October 25, 2017