Biden under scrutiny as second batch of classified documents reportedly found

Another set of materials discovered at a separate location, as White House addresses first discovery at Biden's institute

Joe Biden was facing fresh scrutiny over his handling of government secrets on Wednesday after a second batch of classified materials was reportedly found at a location linked to him.

The White House was already on the defensive after revelations that classified documents were discovered last November in an office used by Biden after he served as US vice-president. On Tuesday he said he was surprised to learn" of their existence.