'Manhattan Madam' Expected To Testify In Mueller's Russia Probe

NEW YORK, NY – The "Manhattan Madam" is scheduled to testify before a grand jury in Washington D.C. Friday in Robert Mueller's investigation into Russian interference in the 2016 election.

Kristin Davis, who earned the nickname by running a high-end prostitution ring that is tied to many high profile clients, already voluntarily met with an investigator for Mueller's team last week, CNN reported.

It's unknown what that interview involved, but Davis is connected to Roger Stone, a longtime associate of President Donald Trump who CNN said investigators are "very interested" in.

Davis was caught up in a string of arrests during the scandal surrounding New York Governor Eliot Spitzer in 2008, though her firm was never connected to Spitzer. She later ran a failed campaign to become the state's governor in 2010.

Stone acted as her campaign strategist.

In a statement to CNN, Stone said Davis was "a longtime friend and associate" who "knows nothing about Russian Collusion, WikiLeaks collaboration or any other impropriety related to the 2016 election which I thought was the subject of this probe."

Trump has insisted there was no collusion with Russia and has repeatedly called Mueller's probe a "witch hunt."

Photo by Audrey C. Tiernan-Pool/Getty Images