MANDEL NGAN via Getty Images The crowd jeered at Sen. Dianne Feinstein (D-Calif.) as Trump accused her of leaking Christine Blasey Ford's letter accusing Brett Kavanaugh of sexual assault. Trump didn't provide any evidence for his claim.

The audience at President Donald Trump’s rally in Iowa on Tuesday night erupted with a lively “Lock her up” chant, but this time it wasn’t aimed at Hillary Clinton.

The crowd jeered after Trump claimed, without evidence, that Sen. Dianne Feinstein (D-Calif.) leaked the letter that was sent to her by Christine Blasey Ford, the California research psychologist who accused Brett Kavanaugh, then a nominee for the Supreme Court, of sexually assaulting her in 1982.

“How about Sen. Feinstein? That’s a beauty,” Trump said. “Did you leak the documents?”

Interrupting Trump, the crowd repeatedly chanted, “Lock her up!”

“And I think they’re talking about Feinstein,” Trump said, reacting to the crowd. “Can you believe it?”

“Did she leak it? One hundred percent,” he added. “I don’t want to get sued ― 99 percent. See? Now I can’t get sued.”

Trump then took aim at the people who believe professor Ford and other survivors of sexual assault who came forward in light of Kavanaugh’s confirmation hearings.

“You don’t hand matches to an arsonist, and you don’t give power to an angry left-wing mob,” Trump said as he worked up the crowd.

Feinstein, the top Democrat on the Senate Judiciary Committee, denied that she leaked Ford’s letter, which was first revealed by The Intercept, during the committee’s confirmation hearing on Sept. 27.

Ryan Grim, Washington bureau chief for The Intercept, has denied that Feinstein leaked the Ford letter, its contents or its existence to his investigative team.

Feinstein's staff did not leak the letter to The Intercept — Ryan Grim (@ryangrim) September 27, 2018

Nor did she or her staff leak the existence of the letter to The Intercept. After our story, she turned it over to the FBI, which placed it in his background file, which meant that it became widely available and soon after it was leaked to CNN — Ryan Grim (@ryangrim) September 27, 2018