A former classmate of Supreme Court Justice Brett Kavanaugh tried to tip off US senators and the FBI last year to another sexual misconduct allegation, The New York Times reported Saturday in an excerpt of a new book.

This new claim comes from one of Kavanaugh's former Yale classmates, Max Stier, who said he saw Kavanaugh at a drunken dorm party where his friends pushed his penis into a female student's hands.

The Times amended its story on Sunday to include the previously undisclosed detail that the woman Stier named as the victim declined to speak about the allegation, and her friends told reporters that she did not recall such an incident.

Kavanaugh has denied all previous allegations of sexual misconduct, and refused to answer The Times reporters' questions about Stier's account.

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A former college classmate of Supreme Court Justice Brett Kavanaugh tried to tip off US senators and the FBI last year to another previously unreported sexual misconduct allegation, The New York Times reported Saturday in an excerpt of a new book.

According to the book excerpt, written by Times reporters Robin Pogrebin and Kate Kelly, a former Yale student named Max Stier said he saw Kavanaugh at a drunken dorm party where his friends pushed his penis into a female student's hands. Kavanaugh was reportedly a freshman at the time of the incident.

The Times amended its story on Sunday to include the previously undisclosed detail that the woman Stier named as the victim declined to speak about the allegation, and her friends told reporters that she did not recall such an incident.

Stier declined to discuss the allegation with The Times, but the reporters said they corroborated details of the story with two officials who spoke about the matter with Stier.

Stier's account bears similarities to an allegation made by Deborah Ramirez, another Yale classmate who accused Kavanaugh of pulling his pants down and thrusting his penis in her face at a different dorm party.

The FBI did not investigate Stier's claims, The Times reported.

President Donald Trump shakes hands with Supreme Court Justice Brett Kavanaugh, before a ceremonial swearing-in in the East Room of the White House in Washington, Monday, Oct. 8, 2018. Susan Walsh/AP

Though the FBI did interview Ramirez in September 2018, it did not interview some 25 individuals named by Ramirez as potentially having corroborating evidence of her allegations, according to The Times.

The newspaper added that many of the potential witnesses on Ramirez's list tried, but failed, to reach out to the FBI.

Kavanaugh was confirmed to the Supreme Court last October after a rancorous battle over the multiple allegations of sexual misconduct he faced.

Read more: Anita Hill calls the Brett Kavanaugh confirmation hearings 'a disservice to the American public' and 'a tragedy'

Only one of Kavanaugh's accusers, Christine Blasey Ford, was permitted to testify to the Senate Judiciary Committee, and Democrats railed bitterly against Senate Republicans, who limited the scope of the FBI's investigation into the allegations.

Kavanaugh adamantly denied Ford's and Ramirez's allegations. He declined to answer The Times reporters' questions about Stier's story.

Editor's note: This story has been updated to reflect that The Times adjusted its story on Sunday to include previously unmentioned details about how the woman Stier named as a victim declined to be interviewed and reportedly does not recall the incident.