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Biden aides have been searching for additional classified materials that might be in other locations since a set of classified documents was found in November at the Washington-based think tank, according to a report in NBC News, which first broke the news, and CNN.
The NBC News report said the classification level, number and precise location of the additional documents was not immediately clear. It also said it was not clear when the additional documents were discovered and whether the search for any other classified materials Biden may have from his time as vice president is complete.