In 2005, Germany’s high court ordered the release of a Syrian-born Mamoun Darkazani, who was being held in a German prison in connection with the 2003 Madrid bombings. He was also allegedly seen in a 1999 wedding video with two of the 9/11 suicidal attackers, Marwan al-Shehhi and Ziad Jarrah.

Spanish authorities investigating al-Qaida, along with 41 other suspects, including Osama bin Laden, indicted Darkazani. He was released because a German federal court thought it would be illegal for him to be extradited against his will.  Full Piece