A/HRC/40/59/Add.1 which, in cases exceeding the margins of reasonableness, may well result in arbitrary detention and may even amount to cruel, inhuman and degrading treatment. E. Conditions of detention Police stations 81. The Special Rapporteur visited four holding cells in the Pristina police station, which were found to offer acceptable material conditions for short-term detention up to 48 hours. Prisons and correctional centres 82. The Special Rapporteur found that the material conditions of detention at the newly built high-security prison in Podujevë/Podujevo met the highest international standards and were fully satisfactory. All inmates were held in single-bed cells with shared access to common areas during the daytime from 8 a.m. to 6 p.m. 83. The Dubrava prison dates from the 1980s and was partly rebuilt after the damage caused by NATO airstrikes in 1999. Some of the pavilions have recently been renovated and according to the Director, an additional pavilion is being refurbished every year (currently pavilion 4). The Special Rapporteur is of the view, however, that the use of razor wiring within the confinements of the prison, particularly in the outdoor spaces around each pavilion, does not appear to serve any security purpose and creates an unnecessarily hostile environment. While the medical facilities of the centre are in excellent condition and well organized and equipped, prison staff reported a lack of security cameras in some pavilions and a shortage of adequate detectors to prevent contraband entering the prison. 84. Generally, the infrastructure and material conditions of detention in Dubrava prison were found to be acceptable and in the semi-open section in pavilion 7, the atmosphere was positive and relaxed. However, in the other parts of the prison visited by the delegation and among all other categories of inmates (pretrial section, disciplinary section, reception section, standard regime section), there was a clearly perceptible atmosphere of tension and frustration. Although inmates confirmed that they were being well treated by the prison staff, the Special Rapporteur received a broad range of complaints regarding issues such as the quality of the food, overused mattresses, difficulties in accessing health care, allegations of corruption and of the use of transfers between different detention centres as a disciplinary measure. Issues of particular concern, which seem to have significantly contributed to the rising tension and frustration among inmates, were the prohibition on food parcels from families and the significant reduction of weekend leaves from 21 to only 7 days per year, both of which had been introduced approximately six months earlier by revisions in the application of the law on the execution of criminal sanctions. 85. The Special Rapporteur notes with concern that during his visit he encountered several inmates who had recently inflicted injuries on themselves, generally cuts with razor blades, in order to draw attention to their needs, which may be indicative of a general sense of desperation. 86. Without prejudice to the accuracy of the allegations made, the Special Rapporteur would like to express his serious concern with regard to the mounting tension and frustration in Dubrava prison, which creates very difficult conditions for prison staff and inmates alike and may well result in a situation conducive to violence and escalation. 87. The Special Rapporteur strongly recommends that the relevant penitentiary authorities urgently consider retracting recently introduced restrictions concerning the reception of food parcels and other benefits for all categories of inmates. He also encourages the authorities to establish a system of regular and frequent medical visits in all corridors of Dubrava prison. 13