Former President Trump has arrived at the courthouse in lower Manhattan.

He stepped out of his motorcade, waved, and walked into the side entrance.

A small group of supporters and protesters both cheered and booed his arrival.

Former President Trump is en route to the courthouse in lower Manhattan for this morning's proceedings.

The former president left for the the courthouse from Trump Tower in Midtown Manhattan.

Court this morning may start with a hearing over what prosecutors can ask Trump during cross-examination should he take the stand later in the trial.

The judge would hear arguments from both the people and the defense. The proceedings would then move into jury selection later in the morning.

Prosecutors have indicated they would want to cross-examine Trump on approximately "thirteen different court determinations," including the recent civil finding that he sexually abused columnist E. Jean Carroll, the criminal conviction of the Trump Organization last year, the finding that he committed a decade of business fraud, and the dissolution of his charity, according to sources familiar with the matter.

The hearing -- known as a Sandoval hearing -- is standard practice before jury selection and typically occurs when a defendant signals a willingness to testify.

In a filing last month, Trump's lawyers requested a Sandoval hearing to limit the scope of Trump's potential cross examination, if he opted to testify.

ABC News' Katherine Faulders contributed to this report.

Former President Trump will leave his Trump Tower apartment in Midtown Manhattan this morning and travel down to lower Manhattan for the first day of jury selection in his criminal hush money trial.

The proceedings come after Trump unsuccessfully tried three times last week to delay the start of the trial through the filing of appeals.

As a defendant in a criminal case, the former president will be required to be in court for the entire trial, which is expected to take six to eight weeks.

If former President Trump opts to testify in the trial, prosecutors want to question him about all the times he has been held liable in civil court, according to a new court filing in the case.

Prosecutors have asked Judge Juan Merchan to hold a hearing, known as a Sandoval hearing, to determine the scope of what they can ask Trump on cross-examination.

"We are prepared to do a Sandoval hearing now, later or whenever the court desires," Assistant District Attorney Joshua Steinglass said on Monday.

The judge has not set a date for the hearing but suggested it could be Friday.

In their filing, prosecutors outlined the civil cases they'd like to bring up during the criminal trial, including the $464 million judgment in Trump's civil fraud case, the defamation and battery cases brought by E. Jean Carroll and a lawsuit Trump filed against Hillary Clinton claiming she conspired to rig the 2016 election, for which Trump and his lawyers faced legal sanctions after the case was thrown out as frivolous.

Prosecutors also want to question Trump about a criminal case his company lost in 2022, when the Trump Organization was convicted of tax evasion by providing non-cash compensation to top executives.

They also want to bring up a civil case the New York attorney general won against the Trump Foundation for misusing charitable donations.