Mohamed Atta
Mohamed Mohamed el-Amir Awad el-Sayed Atta ( ; ""  ; September 1, 1968 – September 11, 2001) was an Egyptian hijacker and one of the ringleaders of the September 11 attacks in which four United States commercial aircraft were commandeered with the intention of destroying specific civilian targets. He served as the hijacker-pilot of American Airlines Flight 11 and crashed the plane into the North Tower of the World Trade Center as part of the coordinated attacks. At 33 years of age, he was the oldest of the 19 hijackers who took part in the attacks.
Mohamed Ould Maaouya
Maaouya was born in Méderdra, and he received his higher education in Nouakchott as well as France. In 1984 he became Central Director of the Ministry of the Interior, and he served as Secretary-General of the Ministry of the Interior from 1984 to 1986; he was also a regional "wāli" in 1982 and 1986. He was Adviser to the Presidency of the Republic from 1989 to 1992, then Director of the Cabinet of the Prime Minister Sidi Mohamed Ould Boubacar, with ministerial rank, from 1992 to 1996. From 1996 to 1997, he was Adviser to the Presidency of the Republic again; subsequently he was Secretary-General of the Ministry of Foreign Affairs and Cooperation from 1997 to 1999, Secretary-General of the Ministry of the Interior again from 1999 to 2002, and Secretary-General of the Ministry of Economic Affairs and Development from 2002 to 2005.