4.  The applicant was born in 1960 and at the time of lodging his application he was serving his prison sentence in the Bolu F-type prison. 5.  On 3 December 2007 the applicant wrote a letter to the Ministry of Justice, in which he had praised the imprisoned leader of the PKK, Abdullah Öcalan by using the honorific “sayın”, meaning esteemed. 6.  Pursuant to the Regulations on the administration of penitentiary institutions and the execution of sentences, the applicant was found guilty of breaching prison order by the Bolu F- type Prison Disciplinary Board (referred hereafter as “the Board”). 7.  On 12 December 2007 the applicant was sentenced to 11 days’ solitary confinement on the orders of the Board, on account of his statements in the above mentioned letter. 8.  On 25 December 2007 the Bolu Enforcement Judge rejected the applicant`s objection. 9.  On 15 January 2008 the Bolu Assize Court upheld the judgment of 25 December 2007.