New Jersey Sen. Robert Menendez used coarse language to blast the FBI's latest background investigation of Judge Brett Kavanaugh.

Last week, Republican Sen. Jeff Flake of Arizona and Democrat Chris Coons of Delaware made a bipartisan call for a new probe of Kavanaugh in light of several accusations of sexual misconduct during his Supreme Court confirmation hearings.

As Fox News reported:

And Sen. Jeff Flake, R-Ariz., who originally requested the FBI re-open its investigation into the claims leveled against Kavanaugh by Christine Blasey Ford, agreed.

“No new corroborative information came out of it,” Flake said on Capitol Hill Thursday. “Thus far, we’ve see no new credible corroboration—no new corroboration at all.”

But Flake continued to keep the public guessing, returning to view the report again saying he has "more reading" to do. He pulled a surprise last week when he publicly backed Kavanaugh, and then demanded the FBI probe before a final vote.

Menendez, a Democrat, ripped Republicans and the report itself when asked by a man with a camera. The video was later tweeted out on the senator's Twitter account.

The man asked if Menendez had seen the FBI report and whether he had public thoughts on it.

'Disappointed in My Own Party': 'Outnumbered' Reacts to Doxxing of GOP Senators by Former Dem Intern

'Breezy' Daytime Talk Becomes 'Deranged Propaganda': Tucker, Coulter Ask What Happened to 'The View?'

"Well, I -- that report: If that's an investigation, it's a bulls**t investigation," Menendez said. "The reality is, that is not a full and thorough investigation."

Menendez, who faces reelection against Republican pharmaceutical executive Bob Hugin this November, said the report read like Republicans gave the FBI a "limited" scope to work with.

"I hear a lot about lack of corroboration [of accusers' allegations]," he said. "You don't get corroboration if you don't talk to corroborating witnesses."

However, the top Republican on the Senate Judiciary Committee, Charles Grassley of Iowa, disputed Menendez' sentiment, telling reporters that the Kavanaugh confirmation process has been fair and thorough.

McConnell Offers Forceful Defense of Kavanaugh: Nobody Is 'Guilty Until Proven Innocent' in This Country

'What Evidence Is There?': 'F&F' Hosts Challenge Dem Sen. Coons on Kavanaugh Opposition