Trump – inmate no. P01135809, according to Fulton County Jail records – spent about 20 minutes on Thursday inside the jailhouse, where authorities had said they would take his mug shot.

That represents a first for Trump, who did not have to sit for a photograph when answering charges in his three other criminal cases.

Before boarding his private plane at Atlanta’s Hartsfield-Jackson airport after the booking, Trump repeated his claim that the prosecution – along with prosecutors in the other indictments he faces – is politically motivated.

“What has taken place here is a travesty of justice,” he told reporters.

“I did nothing wrong, and everybody knows it.”

Trump, 77, already has entered uncharted territory as the first former president to face criminal charges, even as he mounts another campaign for the White House next year.

Far from damaging his candidacy, however, the four cases filed against him have only bolstered his standing among Republican voters. He holds a commanding polling lead in the race for the Republican nomination to challenge Democratic President Joe Biden in the November 2024 election.

Dozens of supporters, waving Trump banners and American flags, jostled for a glimpse as Trump arrived at the jail. Among the Trump backers gathered outside was Georgia US Representative Marjorie Taylor Greene, one of the former president’s most loyal congressional allies.

The mug shot, which was not immediately made available, adds Trump to the ranks of gangster Al Capone, crooner Frank Sinatra and other high-profile Americans who have posed for jailhouse photographs.

The image is certain to be circulated widely by Trump’s foes and supporters alike.

Earlier in the day, Judge Scott McAfee set a trial date of October 23 for one of Trump’s 18 co-defendants, lawyer Kenneth Chesebro, after Fulton County District Attorney Fani Willis proposed that date in response to Chesebro’s request for a speedy trial. The judge’s order said the schedule does not yet apply to Trump or any of the other defendants.

At least 10 of his co-defendants already have been booked. Some, like Rudolph Giuliani, the former New York mayor, were stone-faced in their mug shots, while others, such as lawyer Jenna Ellis, smiled for the camera.

All 19 defendants face a Friday deadline to surrender. Court records showed that Mark Meadows, who served as Trump’s White House chief of staff, was processed at the jail on Thursday.

The jail has a reputation for grim conditions that have inspired rap songs and prompted an investigation by the US Justice Department.

Trump faces 13 felony counts in the Georgia case, including racketeering, which is typically used to target organised crime, for pressuring state officials to reverse his election loss and setting up an illegitimate slate of electors to undermine the formal congressional certification of Biden’s 2020 victory.

Willis originally proposed a trial date of March 4 but moved it up for Chesebro after he asked that his trial start by October. Trump’s legal team has not yet proposed a date but is expected to push for a much later start. On Thursday, his newest Atlanta lawyer, Steven Sadow, asked for Trump to be tried separately from Chesebro.

Trump has pleaded not guilty in the three other cases and denied wrongdoing.

Manhattan District Attorney Alvin Bragg filed the first case, accusing Trump of falsifying business records to hide hush money payments to a porn star who claims to have had a sexual encounter with him years ago.

Trump also faces two sets of federal charges brought by Special Counsel Jack Smith – one case in Washington involving election interference and one in Miami involving classified documents he retained after leaving office in 2021. He faces 91 criminal counts in total.

Trump agreed to post $US200,000 ($A312,000) bond and accepted bail conditions that would bar him from threatening witnesses or his co-defendants in the Georgia case.

-with AAP