 Classified documents found from Biden's tenure as vice president. Classified documents from Biden's time as a vice president have been found at a Washington think tank a White House lawyer has said. Attorneys for Biden discovered the document at the Penn Biden Center in November and notified the National Archives. Richard Sobets, special counsel to Biden, said in a statement on Monday. The attorney says that the documents were handed over to the National Archives. The White House is working with the Justice Department to review the classified materials. The White House is cooperating with the National Archives as the Department of Justice regarding the discovery of what appears to be Obama-Biden administration records, including a small number of documents with classified markings. Sobets said. Sobets also noted that the documents were not the subject of any previous request or inquiry by the National Archives. The documents were discovered when Biden's personal lawyers were packing files housed in a locked closet to prepare to vacate office space at the Penn Biden Center in Washington, D.C. Sobets said. Biden was the vice president under President Barack Obama from 2009 to 2017. The discovery of the potentially classified documents will likely to be a headache for President Biden.