It's unfortunate, but probably not unusual, that when Biden's attorneys were clearing out an office he used at a U of Pennsylvania think tank where he spent some time as vice president, they found a few classified documents. They notified the National Archives immediately and they were retrieved from their locked closet the next day. Unfortunate because Trump is going to try to use it for all he can to suggest that he should be able to keep the documents he had OR that Biden should be charged, etc.