The FBI recovered 11 boxes of classified documents during its raid of Mar-a-Lago on Monday.
A Trump lawyer told the Justice Department in June there were no classified materials on the property, The New York Times reported.
The report provides new details into what led to the unprecedented step of searching Mar-a-Lago.
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That's according to The New York Times, which first reported on the written declaration Saturday, citing four people familiar with the document.
The statement was given to the Justice Department after a counterintelligence official had visited Mar-a-Lago on June 3, the outlet reported.
Trump has denied wrongdoing and claimed he declassified all the documents, but did not provide documentation of that. »