The FBI spoke to 10 people and found "no corroboration of the allegations" made by two of Supreme Court nominee Brett Kavanaugh's accusers, according to an executive summary of the report released early Friday.

"The request was for an investigation into current credible allegations against Judge Kavanaugh," reads the report released by Sen. Chuck Grassley, R-Iowa, chairman of the Senate Judiciary Committee.

The summary states that FBI investigators reached out to all witnesses with potential firsthand knowledge of the allegations.

Investigators spoke with six people in an effort to corroborate the allegations against Kavanaugh by California professor Christine Blasey Ford, who testified in front of the committee that Kavanaugh had held her down, put his hand over her mouth, and tried to remove her clothes at a party in Maryland while the two were in high school in 1982.

Those witnesses included Mark Judge, Leland Keyser, P.J. Smyth, Timothy Gaudette, and Christopher Garrett,. FBI investigators also spoke with aninter attorney for one of the witnesses.

Mark Judge, a close friend of Kavanaugh's, was allegedly in the room while Ford was assaulted, and Ford said it was Judge jumping on her and Kavanaugh that allowed her to get away. Smyth, Gaudette and Garrett also attended Georgetown Prep with Judge and Kavanaugh, and their names appeared in the 1982 calendar Kavanaugh discussed in his Senate Judiciary Committee testimony.

FBI personnel also interviewed Deborah Ramirez, who accused Kavanaugh of sticking his penis in her face and forcing her to touch it as she shoved him away while the two were undergraduates at Yale University. Related to Ramirez's allegation, investigators interviewed two supposed eyewitnesses and a close college friend of Ramirez.

A third supposed eyewitness refused to speak with investigators. Participation in FBI background check interviews is voluntary.

The supplemental background investigation was ordered by the White House at the request of the committee. Committee member Sen. Jeff Flake, a Republican from Arizona, voted to pass Kavanaugh's nomination out of committee in a 11-10 partisan vote but said he would not vote for Kavanaugh in the full senate without an investigation.

The sole copy of the 46-page report was delivered early Thursday, and lawmakers were allowed to review starting at 8 a.m. in a vault in the Capitol basement.