The FBI took 11 sets of classified files in a search of ex-US President Donald Trump’s Florida estate this week, according to a search warrant.
The cache includes files marked “TS/SCI”, a designation for top secret material that could cause “exceptionally grave” damage to US national security.
Mr Trump denies any wrongdoing and said the items were declassified.
It was the first time an ex-president’s home was searched in a criminal probe.
The list of items was made public after a judge unsealed a seven-page document on Friday afternoon which included the warrant authorising the unprecedented search of the former president’s Palm Beach residence, Mar-a-Lago.
It said more than 20 boxes of items were taken on Monday, including a binder of photos, a handwritten note, unspecified information about the “President of France” and a clemency letter written on behalf of long-time Trump ally Roger Stone.
As well as four sets of top secret documents, the list includes three sets of “secret documents” and three sets of “confidential” documents.
The warrant indicates that FBI agents were looking into potential violations of the Espionage Act, which makes it illegal to keep or transmit potentially dangerous national security information.
The removal of classified documents or materials is prohibited by law. Mr Trump increased the penalties for the crime while in office and it is now punishable by up to five years in prison.
The warrant notes that the locations searched at Mar-a-Lago include an area called the “45 office” and storage rooms, but not private guest suites being used by Mr Trump and his staff.
The justice department had asked a court to make it public on Thursday, a move considered rare amid an ongoing investigation.
It was approved by a judge on 5 August, three days before it was carried out on Monday, 8 August.
In a statement on his Truth Social platform, Mr Trump said the items recovered were “all declassified” and securely stored.
He said he would have been willing to hand the items over before the search warrant was carried out.
“They could have had it anytime they wanted – and that includes long ago,” he said. “All they had to do was ask.”
Mr Trump’s supporters have been making the legally debatable case that he had the authority as president to declassify all of the recovered documents before he left office, and did so.
Legal experts have told US media it is unclear whether this argument would hold up in court. “Presidents can declassify information but they have to follow a procedure,” Tom Dupree, a lawyer who previously worked in the justice department, told DOPEEXCLUSIVE.
“They have to fill out forms. They have to give certain authorisations. They can’t simply say these documents are declassified. They have to follow a process [and it is] not clear that was followed here.”
A spokesman for Mr Trump, Taylor Budowich, told DOPEEXCLUSIVE, BBC’s US partner, CBS News, that the administration of President Joe Biden “is in obvious damage control after their botched raid”.
Mr Budowich added that the search was “not just unprecedented, but unnecessary”. He also accused the administration of “leaking lies and innuendos to try to explain away the weaponisation of government against their dominant political opponent”.
Many of Mr Trump’s Republican allies, speaking before the warrant was unsealed, condemned the move as politically motivated.
