Former President Trump’s lawyer confirmed in a June letter that there was no classified material at Mar-a-Lago, two sources with knowledge of the investigation tell Fox News. FBI agents executed a search warrant at former President Donald Trump’s Florida estate on Monday and seized items, including 11 sets of material listed as classified. Trump said after the warrant was released Friday that the documents obtained by federal agents were “all declassified.” Trump’s lawyers previously held a high-level meeting in June with people from the Justice Department and the FBI, which the former president briefly attended, but it is unclear whether the letter was signed during the meeting. FBI Seizes Secret Files From MAR-A-LAGO DURING TRUMP HOUSE SEARCH Former President Donald Trump in New York after the FBI raided his Mar-a-Lago home. (Felipe Ramales/Fox News Digital) The former president’s lawyers could face serious legal consequences if they knowingly gave false information to law enforcement. FBI agents seized files marked classified and some classified as top secret during their raid. In a Truth Social post on Friday after the warrant was released, Trump questioned whether the documents seized by the FBI were classified. LIVE UPDATES: FBI SEIZES SECRET FILES FROM MAR-A-LAGO DURING TRUMP FLORIDA RESIDENCE BREAK Former President Donald Trump’s Mar-a-Lago resort in Palm Beach, Florida. (Charles Trainor Jr./Miami Herald/Tribune News Service via Getty Images) “Number one, it was all declassified. Number two, they didn’t have to ‘grab’ anything. They could have it whenever they wanted without playing politics and breaking into Mar-a-Lago. It was in secure storage, with an additional lock placed according to their request…” Trump said. “They could have had it whenever they wanted—and that includes a LOT OF PAST. ALL THEY HAD TO DO WAS ASK. The bigger problem is, what are they going to do with the 33 million pages of documents, many of which are classified, that President Obama went to Chicago?’ CLICK HERE TO GET THE FOX NEWS APP Trump waves to crowd after FBI raid at Mar-a-Lago (Felipe Ramales: Fox News Digital) After Trump’s social media post, the National Archives and Records Administration said in a press release that former President Obama does not control presidential records from his administration. The warrant states that “Office 45,” all storage areas and all other rooms used by Trump and his staff were searched on Monday. Bill Mears of Fox News contributed to this report. Adam Sabes is a writer for Fox News Digital. Story tips can be sent to [email protected] and on Twitter @asabes10.