Over the weekend, former US president Donald Trump wrote a series of social media posts — all in capital letters — saying he could be arrested on Tuesday, calling on his supporters to protest.
He also repeated the false claim that the last US presidential election was rigged against him.
Here's what we know.
Is Donald Trump being arrested?
We haven't heard if Mr Trump will actually be arrested — all we know is that he's claiming he expects to be.
And he hasn't said what supposed charges he would face.
Mr Trump cited what he called "illegal leaks" from the Manhattan District Attorney's Office.
He said those leaks:
"…INDICATE THAT, WITH NO CRIME BEING ABLE TO BE PROVEN, & BASED ON AN OLD & FULLY DEBUNKED (BY NUMEROUS OTHER PROSECUTORS!) FAIRYTALE, THE FAR & AWAY LEADING REPUBLICAN CANDIDATE & FORMER PRESIDENT OF THE UNITED STATES OF AMERICA, WILL BE ARRESTED ON TUESDAY OF NEXT WEEK…"
A spokesperson for the district attorney's office declined to comment.
The office has been calling witnesses to a grand jury investigating hush money paid on Mr Trump's behalf during his 2016 presidential campaign.
The grand jury will decide if there's enough evidence to charge Mr Trump.
The proceedings aren't public, but the case has been generating media attention.
Mr Trump's former lawyer Michael Cohen testified last week.
Mr Cohen said he orchestrated payments in 2016 to two women to buy their silence about sexual encounters they said they had with Mr Trump a decade or so before his presidential run.
Mr Trump, who is campaigning to be the Republican presidential candidate in next year's election, denies the encounters occurred, says he did nothing wrong and claims the investigation is a "witch hunt" by a Democratic prosecutor.
He called on his followers — about 5 million of them — to protest his supposed arrest.
Several Democratic leaders and even former Trump allies have criticised his posts.
"The former president's announcement this morning is reckless: doing so to keep himself in the news & to foment unrest among his supporters," former House speaker Nancy Pelosi said.
Mr Trump's former national security adviser H R McMaster and former economic adviser Gary Cohn on Sunday both urged Trump supporters to respond peacefully to any developments this week.
The former president has called on his support base to protest on his behalf in the past — thousands stormed the US Capitol building in January, 2021 after he repeated false claims the election was rigged.
What are authorities saying?
So far, there hasn't been any announcement about a time frame for the grand jury's secret work in the case — or a potential vote on whether to charge Mr Trump.
But New York authorities have been making security preparations for the possibility that Mr Trump could be indicted.
Officials who spoke to the Associated Press (AP) on condition of anonymity, described those plans as "preliminary".
It's unclear exactly what that would entail, but it could be similar to security protocols put in place for parades in New York.
The AP said that included the potential for closing down the streets around the Manhattan criminal courthouse.
Manhattan District Attorney Alvin Bragg sent an internal memo hours after Mr Trump's post.
"We do not tolerate attempts to intimidate our office or threaten the rule of law in New York," Mr Bragg is quoted as saying by the Associated Press.
He wrote that the office was working with court officers and police to ensure that "any specific or credible threats against the office" would be investigated.
What did Donald Trump do?
Mr Cohen said that he arranged payments totalling $US280,000 ($417,000) to porn actor Stormy Daniels (whose real name is Stephanie Clifford) and Playboy model Karen McDougal.
He said Mr Trump — who was running his first presidential campaign at the time — directed him to make the payments.
Mr Cohen said the payouts were to stop Ms Daniels and Ms McDougal from talking about the encounters they said they had with Mr Trump.
Mr Bragg's office has apparently been examining whether any state laws were broken in connection with the payments, or the way Mr Trump's company compensated Mr Cohen for his work to keep the women's allegations quiet.
Reuters reported that Robert Costello, a former legal advisor to Mr Cohen, was asked to appear before the grand jury.
His testimony was requested by Mr Trump's lawyers because he may have information refuting events as described by Mr Cohen, an unnamed source told the news agency.
It's also been reported that Mr Trump was invited to testify, which legal experts said was a sign that an indictment could be close.
However, an anonymous source told Reuters that Mr Trump declined this offer.
Ms Daniels and at least two former Trump aides — one-time political adviser Kellyanne Conway and former spokesperson Hope Hicks — are among witnesses who have met with prosecutors in recent weeks.
But Mr Trump has denied any wrongdoing and did so again over the weekend.
"There was no misdemeanor," he wrote.
"There was no crime, period."
Hang on, is Donald Trump back on Twitter?
Yes.
His account was reinstated back in November last year.
But he hasn't been tweeting — in fact, his last Twitter post was back in January, 2021.
The posts from the weekend were made on his own social media platform, called Truth Social, which was launched in late 2021.
Here's what it looks like:
While posts on Twitter are called "tweets", posts on Mr Trump's platform are called "truths".
A repost of a tweet on Twitter is called a "retweet".
When users repost a post on Mr Trump's platform, it's labelled as having been "ReTruthed":
At the moment, the Truth platform isn't accepting users, with the the Truth website saying registrations to become a user are closed.
The platform's terms of use prohibit inciting violence:
"When you create or make available any Contributions, you thereby represent and warrant that…
7. Your Contributions do not depict violence, threats of violence or criminal activity.
8. Your Contributions do not advocate or incite, encourage, or threaten physical harm against another…"
In the past few days, Mr Trump's Facebook, Instagram and YouTube accounts were reinstated after a two-year ban ended:
His campaign spokesman told Fox News Digital in January that being back on Facebook would be "an important tool for the 2024 campaign to reach voters".
ABC/wires