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U.S. attorney reviewing documents marked classified from Joe Biden's vice presidency found at Biden think tank
His attorneys identified the material when cleaning out office space at the center and immediately notified the White House counsel.
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The Penn Biden Center is a think tank about a mile from the White House, in Washington, D.C., that is affiliated with the University of Pennsylvania and named for the sitting president.
Sauber also said that on the same day the material was discovered, Nov. 2, the White House counsel's office notified the National Archives, which took possession of the materials the following morning.
The classified material was identified by personal attorneys for Mr. Biden on Nov. 2, just before the midterm elections