Hamburg cell

The Marienstraße in Hamburg, where Mohamed Atta lived from 1998 to 2001.

The Hamburg cell (German: Hamburger Zelle) was, according to U.S. and German intelligence agencies, a group of radical Islamists based in Hamburg, Germany, that included students from different Arab countries who eventually came to be key operatives in the September 11 attacks. Important members included Mohamed Atta, who led the four hijacking teams in 2001 and piloted American Airlines Flight 11; Ramzi bin al-Shibh, who conspired with the other three members but was unable to enter the United States; Marwan al-Shehhi, who piloted United Airlines Flight 175; and Ziad Jarrah, who piloted United Airlines Flight 93 and failed to hit a target in Washington, D.C.. Other members included Said Bahaji, Zakariya Essabar, Mounir el-Motassadeq, and Abdelghani Mzoudi.