A key figure in the Trump-Russia dossier spoke with staff on the Senate Judiciary Committee Tuesday, CNN reports.
Glenn Simpson's private research firm Fusion GPS was initially paid about a million dollars by wealthy Republicans to do research on Trump, and Democrats later asked him to dig up dirt on the then-Republican presidential nominee.
He spoke with committee staff privately Tuesday for more than 10 hours, and "told Congress the truth and cleared the record on many matters of interest to congressional investigators," his spokesman Josh Levy said in a statement.
Paul Manafort, Trump's former campaign chairman, and Donald Trump Jr. will also speak with committee staff in private, but those dates have not been scheduled yet.
The dossier contains salacious allegations about Trump that haven't been verified, and was authored by British spy Christopher Steele during the presidential campaign.
Some of the work, according to Steele, still "needed to be analyzed and further investigated/verified," yet he still passed it along to U.K. and U.S. government officials.
Specifically, his charges a Russian entrepreneur and his tech companies were working for Russian intelligence and helped Russia hack into Hillary Clinton's campaign and the Democratic National Committee, came from "unsolicited intelligence" and "raw intelligence."