A second batch of classified documents discovered by US President Joe Biden’s aides were found at his home garage in Delaware, according to the White House.
The documents contained Obama-Biden Administration records, a statement by Mr Biden’s special counsel said.
A first batch of documents were found at a private office in Washington DC that Mr Biden used after his term as vice-president.
The matter is under review by the US Department of Justice.
Sources familiar with the case who spoke with CBS, the BBC’s US partner, said the justice department review included interviews with multiple witnesses who may have knowledge of how the classified documents were handled.
Mr Biden’s special counsel, Richard Sauber, said the president is fully cooperating with the Department of Justice to ensure the files are stored properly by the US National Archives.
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