The FBI is desperately trying to keep its probe into Hillary Clinton's private email server under wraps.
Investigators have asked a federal judge for permission to file a second secret declaration in response to a Freedom of Information Act (FOIA) lawsuit. VICE News filed the lawsuit against the FBI in an attempt to see what was in Clinton's email server, along with the correspondence between the Bureau and the State department.
"These details supplement defendant's showing that it conducted a reasonable search, but cannot be disclosed on the public record without compromising information that the FBI seeks to protect," the department said on Monday.
Justice Department attorneys offered "additional details" about how the FBI "conducted a reasonable search for records" and "determined that there were no records responsive."
The Justice Department believes a public release of these records could affect the progress of the FBI probe, and in another filing on Monday they refused to detail the nature of their investigation into Clinton's server for that reason.
The Bureau has publicly stated that the probe is a criminal investigation, and not a "security review" as Clinton has insisted.