• California Sen. Dianne Feinstein says she sent a letter to the FBI regarding Supreme Court nominee Brett Kavanaugh.
  • The contents of the letter are not public.

WASHINGTON – Democratic Sen. Dianne Feinstein on Thursday said she referred a letter to the FBI about President Donald Trump’s Supreme Court nominee Brett Kavanaugh, though the contents or subject of the letter are not yet public.

“I have received information from an individual concerning the nomination of Brett Kavanaugh to the Supreme Court,” Feinstein said in a statement on Thursday. “That individual strongly requested confidentiality, decline to come forward or press the matter further, and I have honored that decision. I have, however, referred the matter to federal investigative authorities.”

Feinstein’s statement comes after a report in the Intercept on Wednesday noted that she had been withholding the document from other lawmakers, even fellow Democrats on the Judiciary Committee.

According to the Intercept, the letter originated with California Rep. Anna Eshoo, who may have received it from a constituent in the San Francisco Bay Area “affiliated” with Stanford University. The author of the letter is reportedly being represented by attorney Debra Katz, who works with victims of sexual abuse and harassment.

The news comes after Kavanaugh's marathon confirmation hearings concluded late last week.