U.S President Joe Biden’s aides have found a fresh batch of classified government records at a second location, in a growing political embarrassment for the White House.
The first cache was found at a private office in Washington DC that Mr Biden used after his vice-presidency.
The matter is under review by the US Department of Justice.
“Former President Donald Trump is facing a criminal investigation for allegedly mishandling classified files.”
It was not yet clear on Wednesday when or where the additional tranche of files was found by Biden aides.
The original batch of about 10 documents was discovered in November at the Penn Biden Center, a think tank near the White House, but only came to light this week.
Those papers reportedly include US intelligence memos and briefing materials related to Ukraine, Iran and the United Kingdom.
They relate to his time as vice-president under President Barack Obama but it is unclear why they turned up in a private office he started using after that.
Access to classified documents is limited by law to people with special authorisation and there are rules about how they are kept and stored.
All White House records, including classified ones, are required to be turned over to the US National Archives after an administration’s time in office.
The White House has not yet commented on the newly discovered batch. However, the find has been confirmed by the BBC’s US partner CBS and other US media.
Mr Biden said on Tuesday he was “surprised” when he found out and he was “co-operating” with the justice department’s review.
The controversy comes as the Democratic president faces scrutiny from a new Republican majority in the US House of Representatives.
“Now that Democrats no longer have one-party rule in Washington, oversight and accountability are coming,” James Comer, the new chairman of the House Oversight Committee, said on Wednesday.
The committee is launching inquiries into the president and his family, including a request for the White House to turn over documents and communications related to the classified files.
The White House has said Mr Biden’s lawyers alerted the archives as soon as they recovered the classified materials at the think tank, and the agency retrieved them the next morning.
