Washington (CNN) The FBI on Friday released a redacted version of the memo that top intelligence officials, including former FBI Director James Comey, used to brief President Donald Trump about the compilation of information detailing his possible connections to Russia -- a document which came to be known as the Trump dossier.

The two-page document says, "An FBI source ... volunteered highly politically sensitive information ... on Russian influence efforts aimed at the US presidential election."

The document was provided to CNN by the public records advocacy group James Madison Project, which, alongside Politico , had sued for it and received it from the FBI on Friday night following a judge's order.

The dossier, which was compiled by ex-British intelligence agent Christopher Steele, has been at the center of the political firestorm over probes into Russian interference in the 2016 election.

The investigations, including a special counsel probe, have looked into any potential ties between Trump campaign associates and the Kremlin. Trump has repeatedly denied any collusion.

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