NEW YORK _ Robert Mueller has met the madam.
Kristin Davis, the former madam made famous for her role in the 2008 sex scandal that brought down former New York Gov. Eliot Spitzer, sat for a voluntary interview with investigators working for the special counsel's office this week, CNN reported Friday.
Davis, who once ran for governor and controller before being busted selling prescription pills, worked with flamboyant Republican consultant Roger Stone for a decade.
Stone, a longtime ally of President Donald Trump, has been a rumored target in Mueller's investigation into Russian election meddling.
Last month, following reports that the onetime head of a prostitution ring had been subpoenaed by the special counsel's office, Stone told the New York Daily News that Davis "has no knowledge of Russian collusion during the 2016 election."
"I cannot imagine why the special counsel wants to interview her other than for the purposes of harassment," he added.
Meanwhile, Andrew Miller, who ran Davis' campaign for governor and worked with Stone during the 2016 campaign, was ordered by a judge this week to testify before a Mueller grand jury.
U.S. District Court for the District of Columbia Chief Judge Beryl Howell rejected Miller's challenge to a subpoena on the grounds that Mueller's appointment was unconstitutional.
"Multiple statutes authorize the Special Counsel's appointment, and the official who appointed the Special Counsel had power to do so. For these reasons ... the witness's motion to quash the grand jury subpoenas is denied," Howell wrote in a 93-page opinion signed July 31.
