Former CIA Director James Woolsey has been in contact with FBI agents working under special counsel Robert Mueller regarding his knowledge of former national security adviser Michael Flynn, a spokesman for Woolsey said Friday.

"Ambassador Woolsey and his wife have been in communication with the FBI regarding the Sept. 19, 2016 meeting Ambassador Woolsey was invited to attend by one of Gen. Flynn's business partners," Jonathan Franks, a spokesman for Woolsey, said in a statement. "Ambassador Woolsey and his wife have responded to every request, whether from the FBI, or, more recently, the Office of the Special Counsel."

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According to NBC News, Franks said that Woolsey had been in touch with the FBI both before and after Mueller took over the law enforcement probe into possible collusion between the Trump campaign and Russia. Flynn has become a focal point of Mueller's investigation.

Of reported interest to Mueller is a meeting in September 2016 in which Woolsey said he heard a discussion about sending a U.S.-based Turkish cleric, Fethullah Gülen, back to Turkey.

Woolsey has said he attempted to notify the U.S. government about the conversation by informing then-Vice President Joe Biden Joe BidenJoe Biden looks to expand election battleground into Trump country Trump puts Supreme Court fight at center of Ohio rally Special counsel investigating DeVos for potential Hatch Act violation: report MORE about the matter through a mutual friend.

"It is unfortunate, yet predictable, that in an effort to defend themselves, certain individuals have attempted to impugn the Woolseys' integrity in the media," Franks continued.

BREAKING‼️: Statement on Behalf of former Director, Central Inteligence, James Woolsey. pic.twitter.com/I9I3Z3ttoK — Jonathan Franks (@jonfranks) October 27, 2017

Flynn, who was forced to resign from the White House in February amid revelations that he had lied to Vice President Pence about his conversations with former Russian Ambassador Sergey Kislyak, was paid more than $500,000 for work intended to benefit the Turkish government.

The Turkish government has accused Gülen of being behind a failed 2016 coup attempt, and has demanded that the U.S. send him back to Turkey to face the allegations.

Reuters reported on Thursday that Woolsey had previously pitched a $10 million plan to two Turkish businessmen to help discredit Gülen.

At the time, Woolsey served as an unpaid adviser to Trump's campaign.

He quit the Trump transition team in early January after reportedly being excluded from discussions on intelligence matters.

Woolsey was also ambassador to the Negotiations on Conventional Armed Forces in Europe treaty prior to his position leading the CIA.