According to the White House, the US law department is looking at confidential documents that were discovered in President Joe Biden’s former office at a think tank.

According to Mr. Biden’s legal team, about 10 of the documents were found in a locked closet at the Penn Biden Center in Washington in November.

The National Archives has received the batch.

Donald Trump, Mr. Biden’s predecessor, is being investigated for moving sensitive documents to Florida after leaving office.

The FBI is involved in the investigation into the sensitive materials discovered at the Penn Biden Center, according to the Daily Business Post’s US partner CBS News, and US Attorney General Merrick Garland has been ordered to evaluate the records.

The purpose of the documents’ presence as well as their relevance and level of classification are unknown.

According to a source with knowledge of the situation, the batch was housed in a folder with other unclassified files and did not include nuclear secrets.

The files were found right before the midterm elections by Biden attorneys who were cleaning out the office space, according to Richard Sauber, special counsel to President Biden, who spoke in a statement to CBS on Monday.

While serving as vice president from 2017 through 2020, Mr. Biden maintained an office at the think tank, which is located about a mile from the White House.

According to Mr. Sauber, “Since that discovery [of the documents], the president’s personal counsel have cooperated with the [National] Archives and the Department of Justice in a process to guarantee that any materials from the Obama-Biden Administration are properly in the Archives’ control.”

His comments did not address why the discovery, which was made soon before the midterm elections, was not made public for two months.

On CBS in September, President Biden was asked to comment on a picture of the papers found at Mr. Trump’s Mar-a-Lago estate in Florida.

How could somebody be that careless, the president questioned.

On Monday, Mr. Trump responded on his social media platform Truth Social, wondering when the FBI would raid Joe Biden’s numerous residences, possibly even the White House.

For reportedly refusing to turn over roughly 300 secret materials that he took to Mar-a-Lago after leaving office, Mr. Trump is under investigation. In one case, the authorities received a tip from the National Archives.

The Biden files were uncovered just before the Justice Department indicated that it would choose whether to charge Mr. Trump criminally for the materials recovered at his golf club.

On Monday, Congressman James Comer, the newly elected Republican head of the House Oversight Committee, stated that there were concerns about the justice department’s impartiality about the handling of the Biden documents.

According to him, the DoJ [justice department] has a two-tier justice system with regard to how they treat Republicans and Democrats, and most definitely how they treat the past president and the present president.

According to CBS News, the Department of Justice has requested that the concerned records be reviewed by US Attorney John Lausch Jr. in Chicago.

Adam Kinzinger, a former Republican congressman, said on CNN that the focus of the probe would be on who handled the documents on the former vice president’s team and if their persistence there was deliberate or accidental.

The National Archives and the Penn Biden Center did not respond right away.