 At the Rwanda trials, the Prosecution originally alleged that the genocidal common plan had been drawn up in 1990 but this theory was dismissed in December 2008 when the defendants in the mammoth "Military I" trial were acquitted of conspiracy to commit genocide.Joint Criminal Enterprise is found in some nations and states and may have its roots in the Common Law of England.Joint Criminal Enterprise as a legal concept has been used at the ICTY and - to a lesser extent - at the ICTR, as well as in the Special Court for Sierra Leone.