Washington (CNN) President Donald Trump's nominee for the Supreme Court, Brett Kavanaugh, is being accused of sexually and physically assaulting a 15-year-old girl at a party during his high school years.

Kavanaugh has repeatedly denied the allegations, but his accuser, Christine Blasey Ford, says there was one other person in the room when the alleged incident took place: Kavanaugh's then-classmate, Mark Judge.

The fate of Kavanaugh's nomination is hanging in the balance as Republicans and Democrats debate allowing a full investigation to take place.

Judge, a journalist and filmmaker, has also denied that the incident took place.

"It's just absolutely nuts. I never saw Brett act that way," Judge told The Weekly Standard in an interview on Friday. CNN has been unable to reach Judge for comment despite repeated attempts.

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