Donald Trump, the first former president in history to face criminal charges, arrived in New York Monday for an expected arraignment on Tuesday after being indicted last week by a Manhattan grand jury, writes CNN.

The expected voluntary surrender of a former president and 2024 White House candidate will be a unique affair in more ways than one – both for the Manhattan district attorney’s office and the New York courthouse where he’ll be arraigned and for a nation watching to see how it’ll shake up the GOP presidential primary.

Trump’s mood was described by an adviser on Monday as “defiant and focused,” as he watched expansive television coverage during his flight back to his native New York City from Florida. The former president has remained “surprisingly calm,” spending the weekend in Florida playing golf and mulling how to use it to boost his campaign, CNN reported Sunday night, after an indictment that caught him and his advisers “off guard”.

Trump faces more than 30 counts related to business fraud, CNN has reported, but the indictment remains under seal.

The Manhattan district attorney’s office has been investigating Trump in connection with his alleged role in a hush money payment scheme and cover-up involving adult film star Stormy Daniels that dates to the 2016 presidential election. Trump and his allies have already attacked Manhattan District Attorney Alvin Bragg – and an advertised Tuesday night speech back at Mar-a-Lago will likely give Trump more opportunity to claim he’s being political persecuted.

Here is what we know about the expected arraignment.