Donald Trump is set to fly from his estate in Florida to New York ahead of his scheduled court hearing on Tuesday.
The former US president is expected to arrive on Monday evening and will spend the night in Trump Tower.
Police erected barricades outside the building over the weekend, with demonstrations expected both there and at the courthouse in Lower Manhattan.
Mr Trump, 76, is facing charges related to hush money payments made to a porn star before the 2016 election.
The exact charges he faces are not yet known but they will be read in full when he appears at the Manhattan Criminal Courts Building at around 14:15 (19:15 BST) on Tuesday.
“I will be leaving Mar-a-Lago on Monday at 12 noon, heading to Trump Tower in New York,” Mr Trump wrote on his social media platform Truth Social.
The former president will be escorted by members of the US Secret Service and will reportedly fly to New York’s LaGuardia Airport on his personal plane.
After spending the night in Trump Tower, where extra security measures have been put in place, he will travel to the courthouse with a large Secret Service detail and surrender voluntarily. He is not expected to be handcuffed.
The former president will experience standard arrest procedure – being fingerprinted and photographed before investigators complete the usual paperwork and check for outstanding warrants.
He will then appear before a judge who will read the indictment – the set of charges – to him. His lawyers have already said he will plead not guilty.