A/HRC/31/57/Add.3 inmates prior to their release. He encourages the Government to proceed with these plans, including by making the necessary investments in adequate infrastructure and work opportunities. 3. Closed or high-security system 81. The Imprisonment Code defines different types of penitentiary establishment, inter alia, closed and high-security establishments. It states that, in both types of establishment, convicted persons are to be kept in special cells, where visual or electronic surveillance may be implemented in accordance with relevant rules. The criteria for placing convicts in one type of establishment or another are defined in Order No. 70 of 9 July 2015 issued by the Minister for Corrections. According to Order No. 70, when taking the decision to place a convict in a closed or a high-risk establishment, authorities must bear in mind the threat stemming from the convict, the convict’s personality, the severity of the crime committed and relevant negative results of the crime, the convict’s conduct in prison with other inmates and prison staff, compliance with the prison regime, attempts to escape, the convict’s ties with organized crime or terrorism, and participation in rehabilitation or resocialization programmes. Similarly, it provides for a procedure to assess the risks posed by a convict. 82. The Special Rapporteur learned that convicts who have committed serious crimes and pose a moderate or high risk to society are kept in closed establishments, while convicts who have committed the most severe offences and/or are serving a life sentence are kept in high-security establishments. Both categories are kept in cells containing from four to six people, distinctly separated from other prisoners. 83. High-security establishments are primarily used for the detention of organized crime or mafia bosses, persons with a high status in the criminal community and inmates who have sufficient authority to initiate a riot in the prison or to incite other inmates to commit unlawful acts. Furthermore, the authorities also transfer to high-security establishment prisoners who pose a threat to other inmates, seriously undermine order in prisons or inflict self-injury. 84. The Special Rapporteur was informed that a large number of inmates, generally those serving longer sentences, are held in high-security prisons, of which several were originally designed for shorter-term pretrial detention. In this way, high-security inmates may spend years living in highly restrictive conditions, comparable with those of pretrial detainees, with the exception that they enjoy access to telephone calls and family visits. Like persons in pretrial detention, access to outdoor areas is restricted to an hour a day and in similar conditions. In addition, the Special Rapporteur noted with concern that some cells, including those occupied by inmates serving a life sentence, did not offer adequate natural light or ventilation. Although all high-security inmates theoretically are eligible for woodcarving or embroidery workshops, only very few actually have access to them. 4. Restrictions and disciplinary sanctions 85. Some facilities have special “safe cells” equipped with closed circuit television for inmates that require closer surveillance. The relevant rules allow prison authorities to decide to place inmates in these cells for a “reasonable amount of time”, a decision that, following a medical report, may be reviewed every 30 days by the same authority that made it. The Special Rapporteur was informed that, in practice, inmates may spend several months in this form of solitary confinement, and is of the opinion that this may constitute cruel, inhuman or degrading treatment and even torture, and may indeed risk exacerbating the conditions that make these inmates a risk to themselves or others in the first place. 14