German intelligence passes information about Mohammed Haydar Zammar to the CIA. Zammar is a member of al-Qaeda’s cell in Hamburg, Germany, which includes a few of the future 9/11 hijackers. According to a 2005 Der Spiegel article, the CIA has its own undercover agent in Hamburg, because it is “concerned that Hamburg could be developing into a launching pad for volunteers being sent to Afghanistan to support bin Laden in his cause.” Because of this German intelligence, Zammar makes it “onto the Americans’ internal most-wanted list.” [Der Spiegel (Hamburg), 11/21/2005] It is not known exactly when in 1999 Germany gives this information to the CIA, but it gives information on one of the 9/11 hijackers in Hamburg to the CIA in March 1999 (see March 1999). Ironically, around the summer of 1999, the CIA learns that Zammar is in direct contact with a senior al-Qaeda operational coordinator, but it fails to tell German intelligence about this (see Summer 1999).