Analysis: the investigation into classified documents at Biden's home 4:51
(CNN) --
Aides to President Joe Biden found another five pages of classified material at his personal residence in Wilmington, Delaware, earlier this week, the White House announced Saturday.
CNN previously reported that 10 classified documents from Biden's time as vice president were found in his former private office at the Penn Biden Center for Diplomacy and Global Engagement in Washington DC last fall.
The classified material found there included some secret files designated as SCI, or Confidential Compartment Information, a category used for highly sensitive information obtained from intelligence sources.
A special prosecutor is appointed to investigate the handling of classified documents by Joe Biden
Those documents included US intelligence memos and briefing materials covering topics including Ukraine, Iran and Britain, according to a source familiar with the matter.
There was also a memo from Biden to President Barack Obama, as well as two briefing memos preparing Biden to make phone calls: one with the British prime minister and the other with Donald Tusk, who served as president of the European Council from 2014 to 2019. It is unclear how much of this material is still sensitive.
US Attorney General Merrick Garland appointed former Maryland federal prosecutor Robert Hur this Thursday as special prosecutor to carry out the investigation of classified documents found at the two locations connected to Biden.
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The president told reporters he is fully cooperating with the Justice Department, and the White House said it was confident the investigation would show the documents were "inadvertently misplaced."
CNN's Jamie Gangel contributed to this report.
Joe BidenJustice