[JURIST] US officials at Guantanamo Bay Monday extradited Moroccan Lahcen Ikassrien to Spain to answer charges that he assisted al-Qaida cell leader Imad Eddin Barakat Yarkas in planning the September 11 attacks. Ikassrien was arrested and sent to the prisoner camp in late 2001. Spanish judge Baltasar Garzon [BBC profile] first petitioned the US to extradite Ikassrien, later identified by Spanish authorities as Chej Hasan, and three others in December 2003. Yarkas went on trial in late April in Madrid on charges of using Spain as a staging ground to help plot the US attacks. AP has more.