Senate chairman Chuck Grassley asked the Justice Department to investigate Julie Swetnick and Michael Avenatti for “grave allegations against Judge Kavanaugh” that may be false. USA TODAY

WASHINGTON – Just days before the midterm elections, Sen. Chuck Grassley asked the federal authorities on Friday to investigate another person he says made false claims against Supreme Court Justice Brett Kavanaugh.

Grassley, in a letter to the Justice Department and FBI, said a woman by the name of Judy Munro-Leighton took responsibility for authoring an anonymous letter that made allegations that Kavanaugh and a friend raped her. After she was tracked down and interviewed by Senate investigators, the woman recanted and said she was not the author and had never met Kavanaugh.

Grassley claims the woman is a left-wing activist and told investigators it was “just a ploy,” he wrote in the letter. Her full comments to investigators were not made available and efforts by USA TODAY to reach Munro-Leighton were unsuccessful.

Grassley asked for federal authorities to investigate her on allegations of making false statements and obstruction.

The letter marks at least the fourth request Grassley has made of federal authorities to investigate those involved in the controversial Kavanaugh proceedings, which were extended due to a series of sexual assault allegations surfacing when Kavanaugh was in high school and college.

Kavanaugh has denied all the allegations.