Future 9/11 hijacker Mohamed Atta and a group of his radical Islamist friends move into an apartment in Wilhelmsburg, an island on the Elbe River in the middle of Hamburg, Germany. The area is a run-down industrial zone. It is unclear who all the members of the group living in the apartment are, but Marwan Alshehhi and Ramzi bin al-Shibh live there. For the first time, this group becomes very closely tied together. They live an extremely simple life, with nothing but mattresses for furniture and no electrical devices except for lights. Neighbors will later say the men in the apartment talk long into the night nearly every night, with the blinds on the windows permanently closed. The group moves to a nicer apartment on November 1, 1998 (see November 1, 1998-February 2001). [McDermott, 2005, pp. 58-60]
Summer-Winter 1998: Bin Al-Shibh and Alshehhi Not in Hamburg, Possibly Visiting Afghanistan
Two members of the Hamburg cell comprising some of the lead 9/11 hijackers and their associates are absent from the city for periods. Ramzi bin al-Shibh vanishes from Germany over the summer, it is unclear where he goes. Marwan Alshehhi is unaccounted for over a period of three months. Before disappearing he withdraws over $5,000 from his bank and, while he is gone, his normally active credit card accounts are dormant. He makes no charges on them or withdrawals from ATM machines between September 3 and early December. Bin al-Shibh is again absent in the winter. Mohamed Atta is also absent from Hamburg around the same time (see Late 1997-Early 1998). Commenting on the disappearances, author Terry McDermott will say, “Practically, there is only one place they likely would have gone—Afghanistan.” [McDermott, 2005, pp. 57]
July 7, 1998: Stolen Passport Links 9/11 Hijackers and Spanish Terrorist Cells
Thieves snatch a passport from a car driven by a US tourist in Barcelona, Spain, which later finds its way into the hands of would-be hijacker Ramzi Bin al-Shibh. Bin al-Shibh allegedly uses the name on the passport in the summer of 2001 as he wires money to pay flight school tuition for Zacarias Moussaoui in Oklahoma (see July 29, 2001-August 3, 2001). After 9/11, investigators will believe the movement of this passport shows connections between the 9/11 plotters in Germany and a support network in Spain, made up mostly by ethnic Syrians. “Investigators believe that the Syrians served as deep-cover mentors, recruiters, financiers and logistics providers for the hijackers—elite backup for an elite attack team.” [Los Angeles Times, 1/14/2003] Mohamed Atta travels to Spain twice or three times in 2001 (see January 4-10, 2001, July 8-19, 2001, and September 5, 2001), perhaps to make contact with members of this Spanish support team.
November 1, 1998-February 2001: 9/11 Hijacker Atta and Associates Are Monitored Some by US and Germany in Their Hamburg Apartment
Future 9/11 hijacker Mohamed Atta, al-Qaeda operatives Said Bahaji and Ramzi Bin al-Shibh, and others in the al-Qaeda Hamburg cell move into a four bedroom apartment at 54 Marienstrasse, in Hamburg, Germany, and some of them stay there until February 2001. Investigators will later believe this move marks the formation of the Hamburg al-Qaeda cell. [Los Angeles Times, 1/27/2002; New York Times, 9/10/2002] Up to six men at a time live at the apartment, including, at times, 9/11 hijacker Marwan Alshehhi and cell member Zakariya Essabar. Alshehhi moves out after the first month; it is unclear why. [New York Times, 9/15/2001] During the 28 months Atta’s name is on the apartment lease, 29 Middle Eastern or North African men register the apartment as their home address.
Surveillance of Bahaji – From the very beginning, the apartment is under surveillance by German intelligence, because of investigations into businessman Mamoun Darkazanli that connect to Bahaji. [Washington Post, 10/23/2001] The Germans also suspect connections between Bahaji and al-Qaeda operative Mohammed Haydar Zammar. [Los Angeles Times, 9/1/2002] Bahaji is directly monitored for at least part of 1998, but German officials will not disclose when the probe began or ends. This investigation is dropped for lack of evidence (see (Late 1998)). [Associated Press, 6/22/2002; Los Angeles Times, 9/1/2002] Bahaji moves out in July 1999 and gets married a few months later (see October 9, 1999). [Der Spiegel (Hamburg), 8/29/2011]
Surveillance of El Motassadeq – German intelligence monitors the apartment off and on for months, and wiretaps Mounir El Motassadeq, an associate of the apartment-mates who will later be convicted for assisting the 9/11 plot, but apparently it does not find any indication of suspicious activity (see August 29, 1998). [Chicago Tribune, 9/5/2002]
Surveillance of Zammar – Zammar, a talkative man who has trouble keeping secrets, does not live at the apartment, but he is a frequent visitor to the many late night meetings there. [Miller, Stone, and Mitchell, 2002, pp. 259-60; Los Angeles Times, 9/1/2002; Chicago Tribune, 9/5/2002] He even lives in the apartment for a time in February 1999 (see February 1999). Zammar is the focus of an investigation that began in 1997 and continues until early 2000 (see March 1997-Early 2000). Interest in monitoring him increases in late 1998 (see October 2, 1998).
Surveillance of Atta – The CIA also allegedly starts monitoring Atta in early 2000 while he is living at the apartment, and does not tell Germany of the surveillance (see January-May 2000). Atta leaves Germany to live in the US in June 2000 (see June 3, 2000).
No Direct German Surveillance of the Apartment? – Yet, even though people like Zammar who frequently phone and visit the apartment are monitored, German officials will later claim that the apartment itself is never bugged. An unnamed senior German security official will later say that some surveillance of associated people gives “the impression that the people living there were fanatical believers. At the BfV [Germany’s domestic intelligence agency], we had to decide whether to ask permission to place a wiretap on the line at 54 Marienstrasse itself. We discussed this every day.” But he will claim that they ultimately decide they will not be able to get legal permission for a wiretap because there is no evidence that the apartment’s occupants are breaking any laws. [Vanity Fair, 11/2004] This claim that the apartment was not directly monitored seems contradicted by reports that Bahaji was the target of a surveillance investigation when he was living in the Marienstrasse apartment in late 1998 (see (Late 1998)).
What Would More Surveillance Have Uncovered? – It will later be clear that investigators could have found evidence if they looked more thoroughly. For instance, one visitor will recall Atta and others discussing attacking the US. [Knight Ridder, 9/9/2002] 9/11 mastermind Khalid Shaikh Mohammed is in Hamburg several times in 1999 and comes to the apartment. However, although there is a $2 million reward for Mohammed since 1998, the US apparently fails to tell Germany what it knows about him (see 1999). [Newsweek, 9/4/2002; New York Times, 11/4/2002] 9/11 Hijacker Waleed Alshehri also apparently stays at the apartment “at times.” [Washington Post, 9/14/2001; Washington Post, 9/16/2001] Remarkably, shortly after 9/11, the German government will claim it knew little about the Hamburg al-Qaeda cell before 9/11, and nothing directed it towards the Marienstrasse apartment. [Daily Telegraph, 11/24/2001]
Late 1998: German Intelligence Knows All Key Names of Al-Qaeda Hamburg Cell Members by This Time
According to author Terry McDermott, by late 1998, German intelligence knows all the key names of the al-Qaeda Hamburg cell led by 9/11 hijacker Mohamed Atta and hijacker associate Ramzi bin al-Shibh. This is mostly due to the on-going surveillance of Mohammed Haydar Zammar and Mamoun Darkazanli (see March 1997-Early 2000, Late 1998 and December 1999). It is not clear if the group is seen as an al-Qaeda cell, or just a bunch of radical Islamists. One unnamed senior German intelligence official will say in November 2001, “We only knew them as radical Muslims. This is not a crime.” This person will add, “They might have had contact with followers of Osama bin Laden. This also is not a crime.” [McDermott, 2005, pp. 73, 279] It is unknown if Germany shares this intelligence with the US.
Late 1998: German Intelligence Begins Monitoring Al-Qaeda Hamburg Cell Member Bahaji
German intelligence investigates al-Qaeda Hamburg cell member Said Bahaji. The investigation stems from an investigation into cell member Mohammed Haydar Zammar, which started in 1997 (see March 1997-Early 2000). Many contacts are noticed between Zammar and Bahaji. According to the Los Angeles Times: “In part because of the acquaintance, German police in 1998 performed what they describe as limited surveillance on Bahaji. Bahaji at the time was living with [future 9/11 hijacker Mohamed] Atta and [hijacker associate Ramzi] bin al-Shibh. Nothing came of the surveillance and it was discontinued.” [Los Angeles Times, 9/1/2002] However, German officials will not say when exactly the surveillance stops. [Associated Press, 6/22/2002] Bahaji lives with Atta and bin al-Shibh at the Marienstrasse apartment starting in November 1998 (see November 1, 1998-February 2001), so the surveillance of him probably starts in late 1998. However, it is likely that interest in and possibly surveillance of Bahaji continues after this time. Bahaji will be watchlisted in March 2000 (see March 2000). Author Terry McDermott will later comment about the difficulty of being put on a watch list: “In Germany, this was not a casual event. In order to be placed on such lists, intelligence agencies had to go to great lengths to demonstrate to the Bundestag, the German parliament, that the person under question was of potential danger to the state.” McDermott will further note that being placed on this list would be an indication the person has been under surveillance for a long time. [McDermott, 2005, pp. 73, 297]
Late 1998-September 11, 2001: Mosque Connections Hint at Al Taqwa Knowledge of Al-Qaeda Plots
By late 1998, US and Italian intelligence are already aware of the importance of a mosque in Milan, Italy, called the Islamic Cultural Institute. After 9/11, the Treasury Department will call the mosque “the main al-Qaeda station house in Europe. It is used to facilitate the movement of weapons, men and money across the world.” Additionally, they are aware that Ahmed Idris Nasreddin, a founder and director of Al Taqwa Bank, is also a founder and financier of the mosque. The mosque is also less than 50 miles away from Al Taqwa’s headquarters on the Swiss border.(see 1995-1997). [Newsweek, 3/18/2002] US officials will later say that al-Qaeda operatives involved in the 1998 US embassy bombings stayed at the Milan mosque. This causes US and Italian intelligence to watch the mosque more closely, and it also causes the US to look closer at Al Taqwa Bank (see 1997-September 11, 2001). [Newsweek, 3/18/2002] One member of the al-Qaeda cell in Milan lives in Hamburg with 9/11 plotter Ramzi bin al-Shibh for most of 1998 (see December 1997-November 1998). In 2000, Abderazek Mahdjoub, the head of the Milan cell, lives in Hamburg, attends the Al-Quds mosque that the Hamburg al-Qaeda cell attends, and has ties with some of the 9/11 hijackers (see 2000). Al-Qaeda operatives involved in the failed millennium bombing plot in Jordan also stay at the Milan mosque (see November 30, 1999). The Jordanian government later will claim that Al Taqwa helped fund these millennium bombers. [Newsweek, 3/18/2002; Newsweek, 4/12/2004] Starting in late 2000, Italian intelligence, wiretapping people associated with the Milan mosque and/or the Milan al-Qaeda cell, record conversations suggesting foreknowledge of the 9/11 plot (see August 12, 2000; January 24, 2001). This information is shared with the US in early 2001 (see March 2001). Additional evidence will come out after 9/11 suggesting some people in Milan had foreknowledge of the 9/11 attacks (see September 4, 2001; September 7, 2001). Given the closeness of the Al Taqwa Bank to the mosque, especially through Nasreddin, this raises the possibility of Al Taqwa involvement and knowledge of specific al-Qaeda plots, including the 9/11 attacks, though there is no known evidence of such direct ties except for the attempted millennium bombing mentioned above.
1999: KSM Repeatedly Visits 9/11 Hijacker Atta and Others in Al-Qaeda’s Hamburg Cell
9/11 mastermind Khalid Shaikh Mohammed (KSM) “repeatedly” visits 9/11 hijacker Mohamed Atta and others in the Hamburg al-Qaeda cell. [Associated Press, 8/24/2002] US and German officials say a number of sources place KSM at Atta’s Hamburg apartment, although when he visits, or who he visits while he is there, is unclear. [Los Angeles Times, 6/6/2002; New York Times, 11/4/2002] However, it would be logical to conclude that he visits Atta’s housemate Ramzi Bin al-Shibh, since investigators believe he is the “key contact between the pilots” and KSM. [Los Angeles Times, 1/27/2003] KSM is living elsewhere in Germany at the time. [New York Times, 9/22/2002] German intelligence monitors the apartment in 1999 but apparently does not notice KSM. US investigators have been searching for Mohammed since 1996, but apparently never tell the Germans what they know about him. [New York Times, 11/4/2002] Even after 9/11, German investigators will complain that US investigators do not tell them what they know about KSM living in Germany until they read it in the newspapers in June 2002. [New York Times, 6/11/2002]
1999: Germans Miss Links between Hamburg 9/11 Hijackers and Key Al-Qaeda Operative
The 9/11 Commission will later call Mohamedou Ould Slahi “a significant al-Qaeda operative who, even [in late 1999], was well known to US and German intelligence, though neither government apparently knew he was operating in Germany.” [9/11 Commission, 7/24/2004, pp. 165]
Thinks He Was Monitored – However, while in US custody after 9/11, Slahi will allege that a phone call he received in January 1999 from his cousin Mahfouz Walad Al-Walid, a top al-Qaeda leader living in Afghanistan, was monitored. Slahi will say, “I later learned that my cousin was using Osama bin Laden’s satellite phone that was intercepted.” Another mutual cousin was arrested that month and Slahi says, “I wasn’t captured, but I am sure I was followed by the German police [and/or] German intelligence.” He claims the imam at his mosque told him that German officials had come to ask questions about him and was told Slahi had ties with terrorists. [US Department of Defense, 4/20/2006, pp. 184-216] In 2000, the New York Times will report that German authorities became interested in Slahi “shortly after the bombings of American Embassies in East Africa in 1998. The German authorities learned that [he] might have ties to Islamic extremists in Europe.” [New York Times, 1/29/2000]
Links to 9/11 Hijackers – After Hamburg al-Qaeda cell member Ramzi bin al-Shibh is captured in 2002, he will allegedly claim that Slahi was the one who originally recruited 9/11 hijackers Marwan Alshehhi and Ziad Jarrah. [Agence France-Presse, 10/26/2002] After 9/11, another prisoner in US custody will say that Slahi and bin al-Shibh met in Frankfurt in 1999 through an acquaintance. This acquaintance will go further and will claim Slahi knew bin al-Shibh and Jarrah since at least 1998 and that Slahi later lived with them in Hamburg. [9/11 Commission, 7/24/2004, pp. 496] In October 1999, bin al-Shibh and Alshehhi call Slahi, and he invites them to come to where he lives in Duisburg, Germany. Bin al-Shibh, Alshehhi, and Ziad Jarrah soon go visit him there. Karim Mehdi, an apparent leader of the al-Qaeda Ruhr Valley cell who will later be sentenced to nine years in prison for a post-9/11 plot, is also at this meeting. Bin al-Shibh, Alsehhi, and Jarrah follow Slahi’s advice to go to Afghanistan instead of Chechnya, and he gives them instructions on how to meet up with al-Qaeda operatives there. [9/11 Commission, 7/24/2004, pp. 165; Deutsche Presse-Agentur (Hamburg), 8/3/2005; Associated Press, 10/26/2006] US investigators later believe Slahi worked closely on al-Qaeda matters with bin al-Shibh and instructed another militant to go to the US and to take part in the 9/11 plot. Additionally, he is believed to have a key role in Ahmed Ressam’s millennium plot (see December 15-31, 1999). [Los Angeles Times, 4/24/2006]
No Action – German authorities are monitoring and wiretapping the phones at bin al-Shibh’s apartment throughout 1999 (see November 1, 1998-February 2001 and 2000), but they apparently do not connect Slahi to the Hamburg militants or do not act on that connection. The Germans will apparently miss another chance to learn of his ties to the Hamburg cell in April 2000, when Slahi is arrested for three weeks in Germany and then let go (see January-April 2000). [US Department of Defense, 4/20/2006, pp. 184-216] Note that the testimonies of detainees such as Slahi and bin al-Shibh are suspect due to widespread allegations that they were tortured into confessions (for instance, see September 27, 2001).
Early 1999: KSM Allegedly Works on 9/11 Plot in Hamburg
Counterterrorism expert Rohan Gunaratna will later claim that 9/11 mastermind Khalid Shaikh Mohammed (KSM) visits Hamburg at this time and meets with 9/11 hijacker Mohamed Atta and hijacker associate Ramzi bin al-Shibh. Together, they make plans to carry out the 9/11 attacks in the US. [Gunaratna, 2003, pp. xxx] Other accounts claim KSM repeatedly visits Hamburg this year but do not definitively state who he meets (see 1999). The 9/11 Commission will later claim that the Hamburg al-Qaeda cell including Atta and bin al-Shibh will not be asked to join the 9/11 attacks until late 1999 in Afghanistan (see Between January and October 1999).
