Six more classified documents have been found at US President Joe Biden's home.
FBI agents also took some of his notes as they searched Biden's home in Wilmington, Delaware on Friday, the President's lawyer said.
The documents taken by the FBI spanned Biden's time in the Senate and the Vice Presidency, while the notes dated to his time as Vice President.
Bob Bauer, the President's personal lawyer, said the search of the entire premises lasted nearly 13 hours. The level of classification, and whether the documents removed by the FBI remain classified, was not immediately clear as the Justice Department reviews the records.
Earlier this month Mr Biden's attorneys announced they had found a "small number" of classified records at a former office at the Penn Biden Center in Washington shortly before the midterm elections.
Mr Biden has maintained "there's no there there," as he prepares to launch a reelection bid.
"We found a handful of documents were filed in the wrong place," Mr Biden told reporters Thursday in California. "We immediately turned them over to the Archives and the Justice Department."
The US President added that he was "fully cooperating and looking forward to getting this resolved quickly."
Attorney General Merrick Garland has appointed former Maryland US Attorney Robert Hur as a special counsel to investigate any potential wrongdoing surrounding the Biden documents.
"Since the beginning, the President has been committed to handling this responsibly because he takes this seriously," White House lawyer Richard Sauber said. "The President's lawyers and White House Counsel's Office will continue to cooperate with DOJ and the Special Counsel to help ensure this process is conducted swiftly and efficiently."
Classified documents are to be declassified after a maximum of 25 years. Biden served in the Senate from 1973 to 2009.
