"The FBI received more than 4,500 calls and messages related to Kavanaugh, and was directed to forward the tips to the White House without pursuing any leads.
"Even when senators contacted the FBI with names of people who claimed to have relevant information about Kavanaugh, the FBI did not contact them."
https://www.washingtonpost.com/politics/2024/10/08/kavanaugh-trump-white-house-fbi-report/