Former President Trump, speaking to reporters on his arrival at the lower Manhattan courthouse, said the trial is a witch hunt resulting from his standing in the presidential polls.

"This is a continuation of the greatest political witch hunt of all time," he told reporters outside the courtroom.

Trump said he is innocent of the accusations and that his portfolio has a much higher value than what the attorney general alleges.

Members of Donald Trump's legal team, speaking to reporters outside the courthouse prior to the start of the trial, called the fraud allegations against the former president "election interference."

Trump's attorneys said that Democrats were using the case to fight Trump's efforts to retake the White House in 2024.

New York Attorney General Letitia James has arrived at the courthouse in lower Manhattan.

"No matter how powerful you are, no matter how much money you think you may have, no one is above the law," James said to the cameras before entering the courthouse.

"Today we will prove our case in court," she said. "Justice will prevail."

Demonstrators across the street from the courthouse cheered and applauded as the AG arrived.

Former President Trump is in a motorcade on his way to the courthouse in lower Manhattan where his fraud trial will get underway this morning.

Opening statements in the case are scheduled to get underway at 10 a.m. ET.

-John Santucci

Donald Trump's lawyers abruptly stopped the testimony of their first expert witness -- who was expected to testify for a full day or two -- after Judge Engoron limited the topic areas of his testimony.

Steven Witkoff, a real estate investor and longtime friend of Trump's, was brought into court by the defense team to testify that Trump's Doral golf club was undervalued in Trump's financial statements.

But Judge Engoron sustained an objection from the state barring any testimony about the valuation of Doral, significantly limiting Witkoff's testimony and appearing to hamper the defense strategy proposed by Trump's attorney Chris Kise.

Kise argued that the inaccuracies in Trump's statement of financial condition can cut both ways: Even if some properties were overvalued, other properties like Doral were significantly undervalued and balanced out the statement, according to Kise.

"It is highly, extraordinarily relevant if there are assets that are undervalued substantially on those same statements," Kise said. "They can't look at this one-sided."

State attorney Andrew Amer fiercely rebutted that argument, telling Engoron he should not take the defense's position that the inconsistencies "come out in the wash."

That argument appeared to convince Engoron, who said that overvaluations would not "insulate" a false valuation. He promised to sustain any objection that related to the value of Doral -- an approach Kise described as "lunacy."

"The reader of the financial statement has the right to know whether each particular number was accurate," Engoron said. "They are looking for accuracy."