Early 1999: NSA Monitoring Hears 9/11 Hijacker Names, This Information Is Not Shared with CIA or FBI

As the NSA continues to monitor an al-Qaeda communications hub in Yemen run by hijacker Khalid Almihdhar’s father-in-law (see Late August 1998), they find references to Almihdhar and the hijacker brothers, Salem and Nawaf Alhazmi. They also learn that Almihdhar and Nawaf Alhazmi are long time friends. [9/11 Commission, 1/26/2004, pp. 6 ; 9/11 Commission, 1/26/2004] In early 1999, the NSA intercepts communications mentioning the full name “Nawaf Alhazmi.” However, this information is not disseminated to the intelligence community, as it apparently does not meet NSA reporting thresholds. The 9/11 Congressional Inquiry will say, “Those thresholds vary, depending on the judgement of the NSA analyst who is reviewing the intercept and the subject, location, and content of the intercept.” Another intelligence organisation intercepts the same or similar calls and reports this to the NSA. The Inquiry comments: “NSA’s practice was to review such reports and disseminate those responsive to US intelligence requirements. For an undetermined reason, NSA did not disseminate the […] report.” [Associated Press, 9/25/2002; US Congress, 10/17/2002; US Congress, 7/24/2003, pp. 135 ] The NSA continues to intercept such calls and finds more information a few months later (see Summer 1999 and Late Summer 1999). Near the end of 1999, there will be additional intercepts that give Khalid Almihdhar’s full name and the first names of the other two (see Shortly Before December 29, 1999). But while the NSA will provide some information about these new intercepts to the CIA and other agencies, they will not go back to the earlier intercepts to figure out Nawaf’s full name and close connection to Almihdhar (see December 29, 1999).