5.  The applicant was born in 1964 and lives in Budapest. 6.  The applicant was arrested on 7 February 2005. In 2006 he was convicted of conspiracy to murder and sentenced to five years’ imprisonment in a strict-regime prison. Following the delivery of a non-final judgment, on 24 April 2006 he was transferred to Sopronkőhida Strict and Medium Regime Prison, where he was placed in a special security cell. On 28 April 2006 the applicant’s defence counsel filed a request for transfer with the Ministry of Justice. On 27 June 2006 the Head of the Penitentiary Administration Unit of the Detention Affairs Department of the National Headquarters of the Penitentiary Service (“the Penitentiary Administration”) authorised the applicant’s transfer to Vác Strict and Medium Regime Prison. 7.  Upon a subsequent decision of the Committee for Ordering Special Detention (“the “Committee”), on 17 August 2006 the applicant was transferred to Sátoraljaújhely Strict and Medium Regime Prison in order to be placed in a special security department. In this context the Government submitted that the prison authorities had been informed that his escape had been under preparation; that under Section 30(3) of Act no. CVII of 1995 on the Penitentiary Service this kind of information relating to the security of detention could not be communicated to the detainee; that, besides, further criminal proceedings were being conducted against him; and that these elements had warranted his placement in an appropriate, closed institution and his separation, as far as possible, from his accomplices. The applicant’s placement in a special security department was also supported by information received from the National Bureau of Investigation, classified as a State secret. The information which served as the basis for the decision has never been revealed to the applicant. None of the applicant’s accomplices were placed in a special security department. 8.  Between 17 August 2006 and 23 September 2008 the applicant was detained as a “Grade 4 security” inmate in Sátoraljaújhely prison’s special security department (“KBK”), apart from the period between 15 February and 27 March 2007, which he spent in similar circumstances in Budapest Prison. His classification as a “Grade 4 security” inmate and his placement in the “KBK” department were reviewed and prolonged at regular intervals, but without any reasoning. His complaints about the conditions of detention to the National Commander of Penitentiaries, the Borsod-Abaúj-Zemplén County Public Prosecutor’s Office and the Attorney General’s Office were to no avail. Upon the applicant’s enquiry, on 25 June 2007 the County Public Prosecutor’s Office stated that “decisions concerning placement in KBK departments falls within the jurisdiction of the National Headquarters of the Penitentiary Service, therefore the County Public Prosecutor’s Office is not entitled to take measures in this regard.” The Public Prosecutor’s Office found that all the measures taken by the prison authorities had a proper legal basis. 9.  The rules pertaining to the conditions prevailing in the KBK departments are outlined in the chapter on Relevant domestic law (see paragraphs 13 to 16 below). The applicant submitted that there was only artificial light in his cell, the ventilation was insufficient, the toilet had neither a seat nor a cover, and he had to endure full cavity searches on a daily basis. Moreover, the range of objects he was allowed to possess in his cell was very restricted: no watch, pen, comb, plastic cutlery, teabag or stationery was allowed, and he could have only a limited number of books or newspapers. 10.  Subsequently, the applicant was transferred to Budapest Prison. His detention continued under the “Grade 4 security” regime, although he was no longer placed in a KBK department. He was accommodated in a special security cell located in the basement level of the institution. 11.  Having served his sentence, the applicant was released on 10 February 2009.