Terabytes of data. Dozens of prosecutors, investigators and forensic accountants sifting through millions of pages of financial documents. An outside consulting firm drilling down on the arcana of commercial real estate and tax strategies.
That is the monumental task that lies ahead in the Manhattan district attorney’s criminal investigation into former President Donald J. Trump and his family business after a United States Supreme Court order on Monday cleared the way for prosecutors to obtain eight years worth of Mr. Trump’s tax returns and other financial records.
The brief, unsigned order was a resounding victory for the prosecutors and defeat for Mr. Trump, capping his bitter and protracted legal battle to block the release of the records — an effort that twice reached the Supreme Court — and delivering a jolt to the prosecutors’ efforts after the lawsuit stalled them for more than a year.
The investigation is one of two known criminal inquiries into Mr. Trump, the other coming from prosecutors in Georgia scrutinizing Mr. Trump’s effort to persuade local officials to undo the election results there. When Mr. Trump left office, he lost the protection against indictment that the presidency afforded him.
The district attorney, Cyrus R. Vance Jr., issued a terse statement, saying: “The work continues.” A spokesman for his office declined to comment further on the investigation.
The crucial next phase in the Manhattan inquiry will begin in earnest this week when investigators for the district attorney’s office collect the records from the law firm that represents Mr. Trump’s accountants, Mazars USA, according to people with knowledge of the matter, as well as former prosecutors and other experts who described the next steps on the condition of anonymity.
The investigators, carrying a copy of the August 2019 grand jury subpoena that was at the heart of the lawsuit, will go to the law firm’s office in New York’s Westchester County. They will leave with a vast trove of digital copies of the returns, reams of financial statements and other records and communications relating to Mr. Trump’s taxes and those of his businesses.
Then, the investigators will deliver the mass of data to the office of Mr. Vance, where the team of prosecutors, forensic accountants and analysts have been investigating Mr. Trump and his companies for a wide range of possible financial crimes. Mr. Vance, a Democrat, has been examining whether Mr. Trump, his company and its employees committed insurance, tax and banking fraud, among other crimes, people with knowledge of the matter have said.