Senate Democrats were left unsatisfied Thursday after reviewing the FBI summary of its investigation into sexual assault allegations against Supreme Court nominee Brett Kavanaugh.

Leaving the secure location where the one copy of the report is being held, Democrats said it raised more questions than it answered.

“There’s much in there that raises more questions,” Sen Cory Booker, D-N.J., told reporters after leaving the secured room.

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Sen. Kamala Harris, D-Calif, who sits on the Senate Judiciary Committee with Booker, echoed his assessment.

“This so-called investigation leaves a lot more questions than answers,” she said.

[More: Dianne Feinstein: FBI report is 'product of an incomplete investigation']

Sen. Sheldon Whitehouse,D-R.I., said “report isn’t quite the right word” for the documents senators are reviewing, saying they’re “agent summaries.”

Whitehouse wasn’t ready to offer comment on the details of what he reviewed because of the tight restrictions being placed on senators.

“I need to think through what I can say and what I can’t say,” he said. “The Republicans have put considerable constraints on what we’re allowed to say and I’m sure they’re going to be enforcing them rigorously, even though they appear to be breaking them themselves.”

Sen. Heitkamp, one of the remaining undecided Democrats on Kavanaugh, wouldn’t answer questions after reviewing the documents.

Sen. Chris Coons, who helped broker the one-week investigation with Republican Sen. Jeff Flake of Arizona, said he too was left with more questions.

The Delaware Democrat said he and Flake came into conversations about the FBI report with “different perspectives.”

“This falls short of my expectations for this investigation,” said Coons.

Asked about Republican statements that there is no corroborating evidence backing Christine Blasey Ford’s account in the report, Coons said, “you can’t find what you don’t look for.”

Coons briefly spoke to Flake after both reviewed the documents. Coons said the conversation was “respectful” and “I’m hopeful we’ll speak a little more later today.”