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-August 10, 1999: Pakistani Air Force Pilot Temporarily Replaces Alshehhi as Atta’s Roommate
Hijacker Marwan Alshehhi moved to Bonn, Germany in 1996, and studied German there. He then lived in Hamburg for several months in 1998, and returned to Bonn after failing a language exam. Just as he leaves town, a Pakistani student named Atif bin Mansour arrives in Hamburg, and begins living and studying together with Mohamed Atta. Early in 1999, Mansour applies with Atta for a room to hold a new Islamic study group. Mansour is a pilot on leave from the Pakistani Air Force. As the Los Angeles Times puts it, “This in itself is intriguing—a Pakistani pilot? Investigators acknowledge they haven’t figured out Mansour’s role in the plot, if any.” On this day, Mansour’s brother, also in the Pakistani armed forces, is killed (along with 15 other officers) when his surveillance plane is shot down by India. Mansour returns home and was detained and stopped from returning to Germany. Soon afterwards, Alshehhi returns to Hamburg. According to Mansoor’s father, “Atif was detained because he had not sought permission from the authorities before returning home to attend his younger brother’s funeral.” Then he is set free with assistance from a relative and works on Pakistani air force base. Contacted on his mobile phone by a reporter, Mansour says, “I won’t be able to speak further on such a sensitive issue.” [Rediff, 7/17/2002; Los Angeles Times, 9/1/2002; Washington Post, 9/11/2002] In March 2001, Mohamed Atta applies together with a Pakistani Air Force pilot for a security job with Lufthansa Airlines (see February 15, 2001). This pilot is a member of the same Islamic study group as Mansour, but it’s not clear if this is Mansour and he did come back to or stay in Germany, or if Atta was associating with a second Pakistani Air Force pilot. [Roth, 2001, pp. 9f; Newsday, 1/24/2002] The FBI later notes that Alshehhi arrived “almost as a replacement” for Mansour. After 9/11, the FBI asks Pakistan if the flight lieutenant and squad leader Mansour can be found and questioned about any possible role he may have had in the 9/11 plot, but there’s no indication Pakistan as to whether has ever agreed to this request. [Rediff, 7/17/2002] In late 2002, the German Federal Bureau of Criminal Investigations will say that Mansour remains “a very interesting figure.” [Los Angeles Times, 9/1/2002]
1999: Atta Said to Meet Los Angeles Airport Bomber in Spain
A Spanish newspaper later will claim that Ahmed Ressam, the al-Qaeda operative who attempted to bomb the Los Angeles airport at the turn of the millennium (see December 14, 1999), meets Mohamed Atta in the Alicante region of Spain in this year. It is unclear whether the men trained at the same camp while they were in Afghanistan. [Reuters, 11/26/2001; CTV, 9/14/2002] According to other Spanish reports, in 1997 or 1998 Atta was a student in Valencia under an assumed name (see 1997 or 1998). Valenica is less than 100 miles from Alicante. After his arrest, Ressam began cooperating with US investigators in the summer of 2001 (see May 30, 2001), leading to the possibility that he could have confirmed Atta’s identity as an al-Qaeda operative before 9/11, if he had been asked.
1999: 9/11 Hijacker Atta Warns Religious Associate to Stay Away from Islamic Extremists
This year, future 9/11 hijacker Mohamed Atta is regularly attending Islamic study group meetings led by a fellow Hamburg student named Mohammed bin Nasser Belfas. By this time, Atta and most of the rest of the group have replaced their Western jeans and clean-shaven faces with long beards and tunics. After one of these meetings, Atta asks to privately see Volker Harum Bruhn, an ethnic German who is also a member of the group. Bruhn says that Atta strongly warns him to stay away from Islamic extremists, to follow the Koran strictly, and live a careful life. [Los Angeles Times, 9/1/2002; Knight Ridder, 9/9/2002]
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: 9/11 Hijacker Atta Tries to Sell Afghan Antiquities to German Archeologist
Future 9/11 hijacker Mohamed Atta tries, unsuccessfully, to sell artifacts from Afghanistan. At some time this year, Atta contacts an unidentified archaeologist at the University of Göttingen in Germany and offers to sell him Afghan artifacts. He says he needs to sell them to raise money for flying lessons in the United States. But the archaeologist declines his offer. The archeologist will later tell the German secret service about the incident. [Blouin Artinfo, 1/28/2010; Art Newspaper, 2/2010; National Geographic, 6/13/2014] Atta will spend time in Afghanistan in late 1999 and early 2000 (see Late November-Early December 1999 and January 18, 2000). [New York Times, 9/10/2002; 9/11 Commission, 7/24/2004, pp. 166-167] He will begin taking flying lessons in Florida in July 2000 (see July 6-December 19, 2000). [US Congress, 3/19/2002; St. Petersburg Times, 7/25/2004]
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).
Between January and October 1999: Hamburg Cell Downloads Flight Training Software
According to German investigations, by at least this time, the al-Qaeda Hamburg cell including Mohamed Atta, Marwan Alshehhi, Ziad Jarrah, and Ramzi bin al-Shibh has come up with the idea of attacking the US using airplanes. This theory is based on witness statements and the discovery by the German police of a flight simulator file on a computer used by the Hamburg cell that was downloaded between January and October 1999. [Washington Post, 9/11/2002; Burke, 2004, pp. 244] Both Atta and Alshehhi start taking lessons on ultralight aircraft this year (see April 1999, October 1999, and December 1999). Some suggest they first joined the 9/11 plot in early 1999 (see Early 1999). However, the 9/11 Commission claims that the 9/11 plot was hatched by al-Qaeda’s leadership and was communicated to the Hamburg al-Qaeda cell in Afghanistan in December 1999. [9/11 Commission, 7/24/2004, pp. 165-169]
1999-September 10, 2001: Some 9/11 Hijackers Possibly Spend Time in Philippines
The names of four hijackers are later discovered in Philippines immigration records. However, whether these are the hijackers or just other Saudis with the same names has not been confirmed. 
Abdulaziz Alomari visits the Philippines once in 2000, then again in February 2001, leaving on February 12. [Associated Press, 9/19/2001; Philippines Inquirer, 9/19/2001; Daily Telegraph, 9/20/2001] Ahmed Alghamdi visits Manila, Philippines, more than 13 times, starting in 1999. He leaves the Philippines the day before the attacks. [Daily Telegraph, 9/20/2001; Arizona Daily Star, 9/28/2001; Filipino Reporter, 10/11/2001] Fayez Ahmed Banihammad visits the Philippines on October 17-19, 2000. [Daily Telegraph, 9/20/2001; Arizona Daily Star, 9/28/2001] Saeed Alghamdi visits the Philippines on at least 15 occasions in 2001, entering as a tourist. The last visit ends on August 6, 2001. [Daily Telegraph, 9/20/2001]
Hijackers Mohamed Atta and Marwan Alshehhi were seen Philippines several times, the last time in December 1999 (see December 1999). 9/11 mastermind Khalid Shaikh Mohammed occasionally stays there as well (see September 1998-January 1999). Nothing more has been heard to confirm or deny the hijackers’ Philippines connections since these reports.
