From a 2002 story on the BBC :
"Mr Motassadek is the first man to stand trial over the 11 September attacks. He is accused of being an accessory to more than 3,000 murders in New York and Washington, and of belonging to an al-Qaeda cell in Hamburg. He told the court that four alleged al-Qaeda men - hijackers Mohammed Atta, Marwan al-Shehi, Ziad Jarrah and suspect Ramzi bin al Shaibah - had all wanted to go to Chechnya..."