(CNN) The FBI spoke with Deborah Ramirez on Sunday in its investigation into Supreme Court nominee Brett Kavanaugh, a source familiar with the matter has told CNN.

Ramirez accused Kavanaugh of exposing himself to her at a party when he was a freshman at Yale, according to an account published in The New Yorker. Kavanaugh has vehemently denied the allegation.

In an interview with the magazine, Ramirez said that she realized if she ever did speak with agents for the FBI, she knew she would be questioned about some lapses in her memory, her drinking at the party and her motivation for coming forward.

The source said Ramirez supplied the FBI on Sunday with the names of witnesses.

The revelation raises the question of whether the FBI would interview the witnesses or whether the scope of the agency's mandate precludes them from doing so.

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