The Senate Judiciary committee has referred a witness against Supreme Court nominee Judge Brett Kavanaugh for criminal investigation for potentially giving false statements.

In a press release on Saturday night the committee said it had written to Attorney General Jeff Sessions and FBI Director Chris Wray to request an investigation into a “named individual” for “diverting Committee resources from an ongoing investigation.”

“Committee investigators have actively pursued a number of tips the committee has received regarding the nomination of Judge Kavanaugh to the Supreme Court, though the committee has not been able to substantiate any allegations of wrongdoing by Judge Kavanaugh. One tip was referred to the committee by staff for Sen. Sheldon Whitehouse (D-R.I). While Whitehouse referred the accuser to a reporter, the committee took the claim seriously and questioned Judge Kavanaugh about the allegations under penalty of felony. Judge Kavanaugh denied any misconduct. After the transcripts of that interview became public, the individual recanted the claims on a social media post,” the press release said.

“The Committee is grateful to citizens who come forward with relevant information in good faith, even if they are not one hundred percent sure about what they know. But when individuals provide fabricated allegations to the Committee, diverting Committee resources during time-sensitive investigations, it materially impedes our work. Such acts are not only unfair; they are potentially illegal. It is illegal to make materially false, fictitious, or fraudulent statements to Congressional investigators. It is illegal to obstruct Committee investigations,” Sen. Grassley wrote in the letter.

The individual in question’s name is redacted but the wording makes it apparent that it is a man who goes by the name Jeffrey Catalan on Twitter.

Catalan claimed, in a letter to Republican Sen. Cory Gardner, that Judge Kavanaugh was drunk at a Washington D.C. event in 1998 when he pushed a woman against a wall in a sexual manner.

“When they left the bar (under the influence of alcohol) they were all shocked when Brett Kavanaugh, shoved her friend up against the wall very aggressively and sexually,” he said. “There were at least four witnesses including my daughter.”

But hours later he went on Twitter and said he had recanted his statement and that he made a mistake.

Do everyone who is going crazy about what I had said I have recanted because I have made a mistake and apologize for such mistake

— Jeffrey Catalan (@JeffreyCatala16) September 26, 2018

“Do everyone who is going crazy about what I had said I have recanted because I have made a mistake and apologize for such mistake,” he wrote.