Three FBI agents and a DOJ attorney went to Mar-a-Lago to collect additional material offered by a Trump attorney in response to the subpoena. They were given "a single Redweld envelope, double-wrapped in tape, containing the documents," according to an Aug. 30 filing.
That envelope, it was later found, contained 38 documents with classification markings, including five documents marked confidential, 16 marked secret and 17 marked top secret.
During the visit, the filing said, "Counsel for the former President offered no explanation as to why boxes of government records, including 38 documents with classification markings, remained at the Premises nearly five months after the production of the Fifteen Boxes and nearly one-and-a-half years after the end of the Administration."
Trump's lawyers also told investigators that all of the records that had come from the White House were stored in one location — a Mar-a-Lago storage room. Investigators were permitted to visit the room, but were "explicitly prohibited" from opening or looking inside any of the boxes, they reported, "giving no opportunity for the government to confirm that no documents with classification markings remained."
The Justice Department was also given a signed certification letter stating that a "diligent search" had been completed and that no documents remained.