The man whose alleged testimony sparked a terrorism warning across Europe in 2010 goes on trial today in Germany.
Ahmad Wali Siddiqui, an Afghan living in Germany, was captured by U.S. troops in Afghanistan in July 2010.
While in custody, he is alleged to have provided details of alleged Al-Qaeda plots targeting European cities.
No such attacks ever took place.
The 37-year-old Siddiqui faces a possible 10 years in prison if convicted of membership of Al-Qaeda and the Islamic Movement of Uzbekistan (IMU).
Prosecutors say Siddiqui trained with both terrorist groups in Pakistan and in the border region with Afghanistan in 2009 and 2010, with the aim of taking part in violent jihad, or holy war.
Based on AP reporting