“In March 1999, German intelligence officials gave the Central Intelligence Agency the first name and telephone number of [future 9/11 hijacker] Marwan al-Shehhi, and asked the Americans to track him. …After the Germans passed the information on to the C.I.A., they did not hear from the Americans about the matter until after Sept. 11 [2001], a senior German intelligence official said. ‘There was no response’ at the time, the official said. After receiving the tip, the C.I.A. decided that ‘Marwan’ was probably an associate of Osama bin Laden, but never tracked him down, American officials say.” [The 15th of the month used for date sorting purposes only.]
– James Risen and Eric Lichtblau, “CIA was Given Data on Hijacker Long Before 9/11,” The New York Times, Feb. 24, 2004