"The FBI has protected information that would identify the identities of other confidential sources who provided information or intelligence to the FBI" as well as "information provided by those sources," wrote David M. Hardy, the head of the FBI's Record/Information Dissemination Section (RIDS), in court papers submitted Friday.

Hardy and Department of Justice (DOJ) attorneys submitted the filings in response to a Freedom of Information Act (FOIA) lawsuit for the FBI's four applications for Foreign Intelligence Surveillance Act (FISA) warrants against Page. The DOJ released heavily redacted copies of the four FISA warrant applications on June 20, but USA Today reporter Brad Heath has sued for full copies of the documents. -Daily Caller