Sources told Fox News Digital that the "burn bag" system is used to destroy documents designated as classified or higher.
Sources told Fox News Digital that multiple burn bags were found and filled with thousands of documents.
Sources told Fox News Digital that one of the documents FBI officials found in a burn bag was the classified annex to former special counsel John Durham's final report, which includes the underlying intelligence he reviewed.
The declassification of the classified annex is being done in close coordination between CIA Director John Ratcliffe, Patel, Director of National Intelligence Tulsi Gabbard, Attorney General Pam Bondi and acting National Security Agency Director William Hartman.