Fusion GPS founder testified Trump associate went to FBI over Russia concerns

(Adds report of Trump's lawyer filing defamation lawsuit against BuzzFeed, Fusion; adds BuzzFeed response)

By Sarah N. Lynch

WASHINGTON, Jan 9 (Reuters) - An associate of Donald Trump expressed concerns to the FBI about contacts between Russia and Trump's presidential election campaign team, helping to trigger the probe into possible collusion, according to closed-door testimony made public on Tuesday by a senior Democrat.

Glenn Simpson, who leads the Washington research firm Fusion GPS, said in his August testimony that the Federal Bureau of Investigation received intelligence from a "voluntary source" in Trump's orbit in 2016, before a former British spy gave the FBI his own "dossier" of allegations about collusion.

Fusion GPS hired the former spy, Christopher Steele, to investigate Trump's business dealings with Russia.

Some Republicans critical of Special Counsel Robert Mueller's probe into possible collusion between the Trump campaign and Russian officials have claimed the initial FBI probe was triggered by Steele's dossier.

They have raised questions about whether the FBI may have relied on the Steele document to improperly obtain surveillance warrants to spy on Trump's campaign associates.

Simpson's testimony before the Senate Judiciary Committee in August contradicted those claims.

"They had other intelligence about this matter from an internal Trump campaign source and ... they believed Chris' information might be credible," Simpson testified. "I think it was a voluntary source, someone who was concerned about the same concerns we had."

Simpson later said he was not sure if the FBI informant was from the Trump election campaign or the Trump Organization, the president's real estate firm, which is now run by his two older sons.

Dianne Feinstein, the ranking Democrat on the Senate committee, released the testimony without Republican approval, in an apparent bid to neutralize Republican criticism of the Russia investigation.

Steele's dossier contains a number of inflammatory and salacious allegations about Trump and his alleged connections to Russia. Trump has slammed the dossier as "bogus" and denies his campaign colluded with Russia.

TRUMP'S PERSONAL LAWYER FILES LAWSUITS

On Tuesday, Trump's personal lawyer Michael Cohen filed two defamation lawsuits, one in New York state court against the popular website BuzzFeed News, which published the Fusion GPS dossier last year, and the second in federal court against Fusion GPS itself, ABC News reported.

Both lawsuits say the dossier compiled by Fusion GPS and contained "false and defamatory" allegations about Cohen that resulted in "harm to his personal and professional reputation, current business interests, and the impairment of business opportunities," according to ABC News.