The first group of 96 prospective jurors has been sworn in.

Judge Merchan is now delivering remarks that he said will last about 30 minutes, introducing the case and explaining to prospective jurors their responsibility -- if selected -- to be fair and impartial.

Trump has been leaning forward in his seat listening, with his elbows on the desk.

Dozens of New Yorkers are now being escorted into the courtroom as prospective jurors.

Judge Merchan will deliver a summary of the case before attorneys for both parties have an opportunity to evaluate the prospective jurors' fitness to serve.

According to the pool, 96 individuals will make up the first batch to go through the laborious selection process. Merchan said approximately 200 people have been summoned to the courthouse for potential jury duty on the case.

Trump, during a lengthy break as court officials escorted jurors through security magnetometers, could be seen reclining in his chair and conversing with his attorney Todd Blanche.

Judge Merchan has issued Trump's defense team an ultimatum: Turn over their proposed defense exhibits in 24 hours or be barred from using the materials.

"You have 24 hours," Merchan said. "Anything you don't produce within 24 hours will be precluded."

Defense attorney Todd Blanche pushed back on the deadline, arguing against a prosecutor's assertion that defense withheld materials following a February exhibit deadline for "tactical reasons."

"That is completely false," Blanche said. He asked Merchan for a Wednesday deadline instead, given the demands of the trial.

Merchan declined to grant the request, highlighting the recent flurry of defense motions filed over the last few weeks.

"I don't know how you managed to get those motions out," Merchan said. "The way you choose to use your time is your business."

Judge Merchan has set a hearing on prosecutors' request to hold Trump in contempt for allegedly violating the judge's limited gag order.

After initially setting the hearing for Wednesday, April 24, he rescheduled it for Tuesday, April 23 at 9:30 a.m. ET.

The judge gave Trump's attorneys until April 19 to file their written response.

Prosecutor Christopher Conroy also asked that a copy of the order be served on Trump, and papers were then handed to Trump and defense attorney Todd Blanche at the defense table.

"Karen McDougal was a Playboy model," former National Enquirer publisher David Pecker said, recalling how he learned in June 2016 "that there's a Playboy model who is trying to sell a story about a relationship that she had with Donald Trump for a year."

Pecker said he immediately called Trump's then-attorney Michael Cohen to inform him. By then, he was speaking to Cohen "a couple times a week," but that soon changed. Pecker said he and Cohen spoke "much more frequently" about McDougal's claims.

"Michael was very agitated. It looked like he was getting a lot of pressure to get the answer right away," Pecker said. "He kept on calling, and each time he called he seemed more anxious."

Pecker said he assumed "Mr. Trump was asking Michael Cohen, 'Did we hear anything yet?'" Pecker said.

"Did you ever come to believe that Michael Cohen had spoken with Mr. Trump about McDougal's claims?" prosecutor Josh Steinglass asked.

"Yes I did," Pecker responded before recounting a phone conversation Pecker said he himself had with Trump.

"I said I think the story should be purchased and we should buy it," Pecker recalled telling Trump. "Mr. Trump said to me, 'I don't buy stories. Anytime you do anything like this, it always gets out.'"

Ultimately, McDougal was paid $150,000 and promised a series of exercise articles in the publication.

Following that testimony, court was adjourned.

It's expected the jury will hear more on McDougal upon Pecker's return to the witness stand, when court resumes on Thursday.