High Quality Content by WIKIPEDIA articles! Since Istanbul Heavy Penal Court 13 accepted the 2.455 page strong indictment against 86 defendants in the first case against alleged members of the clandestine organization Ergenekon on 28 July 2008 another 14 indictments have been prepared in this context until February 2011. Until the fourth indictment the number of defendants had increased to 531 and more than 8,000 pages of indictments had been written. Most trials are held in Silivri Prison. At the beginning the courtroom could accommodate about 280 people. In June 2009, the prison`s sport hall was converted for the term of the trial into a maxi courtroom with a capacity for 753 people.