Files in Donald Trump's desk, storage clearly marked 'top secret': DOJ

Donald Trump's office hid classified documents from the government to stop them being returned, a court filing from the Department of Justice said.

Investigators claimed "government records were likely concealed and removed" after a subpoena was issued for the documents to be returned to the national archives.

Trump's lawyers then testified under oath that all classified materials had been returned, a claim now proven to be false. 

READ MORE: 'Limited' privileged material among papers seized from Trump

The 36-page filing appears to be laying out an obstruction of justice case against the former president.

The Department of Justice said in their filing that more than 100 classified documents were seized in the FBI's raid on Trump's Mar-a-Lago country club this month.

The filing also included a photo of some of those documents.

The documents are clearly marked either "secret" or "top secret".

READ MORE: Justice Department releases redacted Mar-a-Lago search affidavit

Most of the sensitive documents were in storage at Mar-a-Lago, but three were kept in a desk drawer in Trump's personal office.

The Department of Justice noted that it took the FBI mere hours to find twice as many classified documents among Trump's files than his own office had surrendered after weeks of apparent searching.

Trump has argued he had declassified every document in his possession, which a president has the right to do.

READ MORE: 'Deep concern' Trump may have put US intelligence at global risk

But he is yet to offer any evidence of that declassification, which needed to have taken place while he was still in office.

The filing also addressed why three of Trump's passports were seized.

The passports, two of which were expired, were in a desk drawer which contained classified documents "co-mingled with other documents".

The department has since returned the passports.

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