President Biden on Monday refused to answer questions about the classified documents that were found at the Penn Biden Center for Diplomacy and Global Engagement in Washington, D.C.

Records from Biden's time as vice president were discovered at the think tank by his personal attorneys on Nov. 2, and included a "small number of documents with classified markings," the White House said. The National Archives were notified and took possession of the documents the following day.

"The documents were not the subject of any previous request or inquiry by the Archives," White House special counsel Richard Sauber said in a statement. "Since that discovery, the President's personal attorneys have cooperated with the Archives and the Department of Justice in process to ensure that any Obama-Biden Administration records are appropriately in the possession of the Archives." 

Attorney General Merrick Garland put U.S. Attorney for the Northern District of Illinois John Lausch in charge of reviewing the records.