After the French put Zacarias Moussaoui on a watch list some time in 1999 (see 1999), they continue to discover more of his ties to militant groups. In late 1999, Moussaoui’s mother says a French intelligence officer contacts her and says her son’s name was in the address book of a man named Yannick who had died fighting for the Muslim cause in Bosnia. [Los Angeles Times, 12/13/2001] In April 2000, French investigators increase their interest in Moussaoui when they learn his best friend Masooud Al-Benin was killed while fighting in Chechnya. Investigators conclude al-Benin and Moussaoui traveled and fought together in Chechnya. Moussaoui’s mother is contacted by French authorities and asked about her son’s whereabouts and his connections to Al-Benin. [CNN, 12/11/2001] At some time in 2000, French intelligence follows Moussaoui to Pakistan. They believe he goes to see an al-Qaeda leader named Abu Jaffa. [CBS News, 5/8/2002] (Abu Jaffa, also known by the names Abu Jafar al-Jaziri and Omar Chaabani, is an Algerian in charge of al-Qaeda’s training camps in Afghanistan. It appears he will be killed in Afghanistan in late 2001.) [Knight Ridder, 1/9/2002] By 2001, French intelligence will be said to have a “thick file on Moussaoui.” [CBS News, 5/8/2002] When Moussaoui is arrested in the US, the French will send this information to Washington at the FBI’s request (see August 22, 2001 and August 30, 2001).
After April 2001: Italian Authorities Uncover Extremists’ Route to Afghanistan
Following the arrest of extremists based around Milan, Italy, in April 2001 (see 2000-April 2001 and Early 2000-2001), local authorities begin to investigate associates of the arrested men. They find that when the group wants to send people to training camps in Afghanistan, this is arranged through two people based at the Islamic Cultural Institute, a well-known radical mosque in Milan. The two men who take care of the arrangements are Abdelhalim Remadna, an Algerian secretary of the mosque’s imam, and a Moroccan named Yassin Chekkouri, both of whom live inside the mosque and almost never leave. After several months of investigation, the authorities find them to be key players in a sophisticated network that is recruiting hundreds of European Muslims for al-Qaeda training camps in Afghanistan. They also find that Remadna communicates frequently with a man named Abu Jaffa (a.k.a. Abu Jafar al-Jaziri), who runs a guesthouse for Algerian militants in Jalalabad, Afghanistan, and that the two of them coordinate the trainees’ movements. The group does not use the usual route for trainees through Pakistan, as it is aware Pakistani stamps in a passport indicate an affiliation with al-Qaeda. Instead, volunteers travel through Turkey and Iran. Members of Remadna’s network say that Iran provides “complete cooperation” with this. Remadna provides the volunteers with addresses of hotels and safe houses, where members of the network meet them and help them cross from Iran into Afghanistan. By analyzing phone traffic, the authorities find that militants from at least six European countries rely on Remadna to reach the Afghan camps. [Vidino, 2006, pp. 219-221]
September 10, 2002: 10 of Al-Qaeda’s 24 Pre-9/11 Leaders Said to Be Killed or Captured
The New York Times reports that 10 out of the 24 al-Qaeda leaders considered most important by the CIA before 9/11 have been killed or captured. [New York Times, 9/10/2002] The four most important figures considered still at large are: 
Osama bin Laden (Saudi). He will be killed in 2011 (see May 2, 2011). Ayman al-Zawahiri (Egyptian). Khalid Shaikh Mohammed (Kuwaiti/Pakistani). He will be captured in 2003 (see February 29 or March 1, 2003). Saif al-Adel (Egyptian).
Other figures considered still at large are: Abdullah Ahmed Abdullah (Egyptian). Mustafa Muhammad Fadhil (Egyptian). Mushin Musa Matwalli Atwah (Egyptian). He will be killed in 2006 (see April 12, 2006). Usama al-Kini (a.k.a. Fahid Muhammad Ally Msalam) (Kenyan). He will be killed in 2009 (see January 1, 2009). Fazul Abdullah Mohammed (a.k.a. Haroun Fazul) (Comoros Islander). He will be killed in 2011 (see June 10, 2011). Mahfouz Walad Al-Walid (a.k.a. Abu Hafs the Mauritanian) (Mauritanian). Amin ul-Haq (Afghan). Midhat Mursi (Egyptian). He will be killed in 2008 (see July 28, 2008). Anas al-Liby (Libyan). He may have been secretly captured already (see January 20, 2002- March 20, 2002). Suliman abu Ghaith (Kuwaiti). Saad bin Laden (Saudi). He apparently will be killed in 2009 (see July 22, 2009). Mustafa Ahmed al-Hawsawi (Saudi). He will be captured in 2003 (see February 29 or March 1, 2003). [New York Times, 9/10/2002]
The four leaders captured are: Abu Zubaida (Palestinian) (see March 28, 2002). Abdul Rahim al-Sharqawi (Yemeni) (see Late 2001 and February 7, 2002). Ibn al-Shaykh al-Libi (Libyan) (see December 19, 2001). Abu Zubair al-Haili (Saudi) (see June 8, 2002 and After). [New York Times, 9/10/2002]
Five of the six leaders believed killed are: Mohammed Atef (Egyptian) (see November 15, 2001). Abu Jaffa (a.k.a. Abu Jafar al-Jaziri) (Algerian). Abu Salah al-Yemeni (Yemeni). Tariq Anwar al-Sayyid Ahmad (Egyptian). Muhammad Salah (a.k.a. Nasr Fahmi Nasr Hasanayn) (Egyptian). [New York Times, 9/10/2002]
The sixth leader believed killed is not named. One year after 9/11, US intelligence identifies 20 current high-ranking al-Qaeda leaders, though it is not mentioned who the six new leaders are who replaced some of the killed or captured leaders. [New York Times, 9/10/2002] This list of leaders, while instructive, is curiously incomplete because it fails to mention al-Qaeda leaders known as important to US intelligence before 9/11, such as Hambali, Khallad bin Attash, Abd al-Rahim al-Nashiri, Thirwat Salah Shehata, Mustafa Abu al-Yazid, Ahmed Khalfan Ghailani, and Mohammed Jamal Khalifa.
