US President Donald Trump's former lawyer Michael Cohen has entered into a plea deal with US federal prosecutors in New York, US media report.
Mr Cohen will reportedly plead guilty to felony charges including tax fraud and campaign finance violations.
He had previously admitted to arranging hush money for a woman who claimed she had an affair with Mr Trump, which could be a campaign finance violation.
Mr Cohen is reportedly due to appear in a Manhattan courtroom on Tuesday. He reportedly surrendered himself to the FBI in New York and is now in the custody of authorities. The charges against him could carry prison time.
Mr Cohen worked at the Trump Organization for more than a decade and continued to serve as Mr Trump's personal lawyer after the 2016 election.
His potential co-operation with investigators has been tipped for weeks. The nature of the reported plea deal is unclear and does not necessarily entail that Mr Cohen is co-operating against the president. It could simply mean he has agreed to plead guilty to unspecified charges in order to spare both sides a lengthy trial.
The New York Times reported on Sunday night that federal investigators were looking into Mr Cohen's business activities. They were focusing on more than $20m (15.5m) in loans to taxi businesses owned by Mr Cohen and his family, according to the newspaper.
What does the deal mean? Anthony Zurcher, BBC News, Washington Ever since federal investigators raided Michael Cohen's office and home back in April, there was speculation that it was only a matter of time before he faced criminal consequences. The only question was whether it would come in the form of an indictment or some type of plea deal negotiated with prosecutors. It appears it will be the latter.
What this means, of course, is still an open question. Mr Cohen was Donald Trump's long-time lawyer, business associate and all-around fixer. If there are skeletons in Mr Trump's closet, Mr Cohen could know where they lurk.
While a plea deal doesn't guarantee that he is sharing information relevant to other federal investigations, he may be rewarded during sentencing if he does so. And the growing tension between Mr Cohen and the Trump team could make that more likely.
Mr Cohen reportedly said he has details about the June 2016 Trump Tower meeting between top members of Mr Trump's campaign staff and Russian nationals.
He facilitated a six-figure payment on the eve of the 2016 election to an adult film actress who was poised to state that she had a sexual liaison with Mr Trump.
These are topics that Mr Cohen might be inclined to flush out in further detail, surely to the discomfort of those in the White House. The FBI seized a number of files during a raid in April on Mr Cohen's office and a hotel room used by him in New York.
They reportedly conducted the raid following a tip-off from the team of special counsel Robert Mueller.
Mr Mueller is investigating whether Trump campaign aides colluded with alleged Kremlin attempts to sway the 2016 presidential election his way.
The president has distanced himself from Mr Cohen since he left his post as Mr Trump's personal lawyer in May.
The investigation into Mr Cohen's business dealings has strained his relationship with the president.
He once famously vowed he would take a bullet for Mr Trump. But he said in an interview last month that his loyalty to his family and country came before his old boss.
What was the hush money about? In May, the president admitted he had reimbursed Mr Cohen for a payment he made to silence adult film actress Stormy Daniels about her alleged affair with Mr Trump just days before the election.
Mr Trump had previously denied all knowledge of the $130,000 (100,675) payment as part of a non-disclosure agreement.