A/66/268 effects on individuals regardless of their specific conditions. He finds solitary confinement to be contrary to one of the essential aims of the penitentiary system, which is to rehabilitate offenders and facilitate their reintegration into society. The Special Rapporteur defines prolonged solitary confinement as any period of solitary confinement in excess of 15 days. 80. Depending on the specific reason for its application, conditions, length, effects and other circumstances, solitary confinement can amount to a breach of article 7 of the International Covenant on Civil and Political Rights, and to an act defined in article 1 or article 16 of the Convention against Torture. In addition, the use of solitary confinement increases the risk that acts of torture and other cruel, inhuman or degrading treatment or punishment will go undetected and unchallenged. 81. Considering the severe mental pain or suffering solitary confinement may cause when used as a punishment, during pretrial detention, indefinitely or for a prolonged period, for juveniles or persons with mental disabilities, it can amount to torture or cruel, inhuman or degrading treatment or punishment. The Special Rapporteur is of the view that where the physical conditions and the prison regime of solitary confinement fail to respect the inherent dignity of the human person and cause severe mental and physical pain or suffering, it amounts to cruel, inhuman or degrading treatment or punishment. Recommendations 82. The Special Rapporteur calls upon States to respect and protect the rights of persons deprived of liberty while maintaining security and order in places of detention. He recommends that States conduct regular reviews of the system of solitary confinement. In this context, the Special Rapporteur reiterates that States should refer to the Istanbul Statement on the Use and Effects of Solitary Confinement as a useful tool in efforts to promote the respect and protection of the rights of detainees. 83. The Special Rapporteur calls upon States to ensure that all persons deprived of their liberty are treated with humanity and respect for the inherent dignity of the human person as protected by article 10, paragraph 1, of the International Covenant on Civil and Political Rights. The Special Rapporteur refers to the Standard Minimum Rules for the Treatment of Prisoners and recommends that States increase the level of psychological, meaningful social contact for detainees while in solitary confinement. 84. The Special Rapporteur urges States to prohibit the imposition of solitary confinement as punishment — either as a part of a judicially imposed sentence or a disciplinary measure. He recommends that States develop and implement alternative disciplinary sanctions to avoid the use of solitary confinement. 85. States should take necessary steps to put an end to the practice of solitary confinement in pretrial detention. The use of solitary confinement as an extortion technique during pretrial detention should be abolished. States should adopt effective measures at the pretrial stage to improve the efficiency of investigation and introduce alternative control measures in order to segregate individuals, protect ongoing investigations, and avoid detainee collusion. 22 11-44570