Trump and Nauta each have pleaded not guilty.
The new charges were outlined in a superseding indictment filed in Florida federal court on Thursday.
They include two more counts of obstruction and a count of willful retention of national defense information.
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They are accused of moving classified materials around Trumps property as federal officials sought the documents.
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They are accused of asking another, unidentified employee to scrub the recording.
According to the new indictment, de Oliveira told the employee that the boss wanted the server deleted.
Trumps attorneys met with Smiths team earlier on Thursday.
No indication of notice was given during the meeting Do not trust the Fake News on anything!
Smith also claims that Trump lied about the top-secret material and attempted to obstruct FBI and grand jury investigations.
See as president I could have declassified it, Trump says.
Now I cant, you know, but this is still a secret, Trump is heard saying.
The documents reportedly were war plans to attack Iran.
De Oliveira also is charged with making false statements to the FBI.
U.S. District Judge Aileen Cannon has set May 20, 2024 as the date for the classified documents trial.
That likely would come after Republicans have a presumptive nominee for the 2024 presidential race.
There is no evidence that the White House influenced Smiths actions.
