liberty; respect for the dignity of such persons must be guaranteed under the same conditions as for that of free persons. Persons deprived of their liberty enjoy all the rights set forth in the Covenant, subject to the restrictions that are unavoidable in a closed environment. 4. Treating all persons deprived of their liberty with humanity and with respect for their dignity is a fundamental and universally applicable rule. Consequently, the application of this rule, as a minimum, cannot be dependent on the material resources available in the State party. This rule must be applied without distinction of any kind, such as race, colour, sex, language, religion, political or other opinion, national or social origin, property, birth or other status. 5. States parties are invited to indicate in their reports to what extent they are applying the relevant United Nations standards applicable to the treatment of prisoners: the Standard Minimum Rules for the Treatment of Prisoners (1957), the Body of Principles for the Protection of All Persons under Any Form of Detention or Imprisonment (1988), the Code of Conduct for Law Enforcement Officials (3.978) and the Principles of Medical Ethics relevant to the role of health personnel, particularly physicians, in the protection of prisoners and detainees against torture and other cruel, inhuman or degrading treatment or punishment (1982). 6. The Committee recalls that reports should provide detailed information on national legislative and administrative provisions that have a bearing on the right provided for in article 10, paragraph 1. The Committee also considers that it is necessary for reports to specify what concrete measures have been taken by the competent authorities to monitor the effective application of the rules regarding the treatment of persons deprived of their liberty. States parties should include in their reports information concerning the system for supervising penitentiary establishments, the specific measures to prevent torture and cruel, inhuman or degrading treatment, and how impartial supervision is ensured. 7. Furthermore, the Committee recalls that reports should indicate whether the various applicable provisions form an integral part of the instruction and training of the personnel who have authority over persons deprived of their liberty and whether they are strictly adhered to by such personnel in the discharge of their duties. It would also be appropriate to specify whether arrested or detained persons have access to such information and have effective legal means enabling them to ensure that those rules are respected, to complain if the rules are ignored and to obtain adequate compensation in the event of a violation. 8. The Committee recalls that the principle set forth in article 10, paragraph 1, constitutes the basis for the more specific obligations of States parties in respect of criminal justice, which are set forth in article 10, paragraphs 2 and 3. 9. Article 10, paragraph 2 (a), provides for the segregation, save in exceptional circumstances, of accused persons from convicted ones. Such segregation is required in order to emphasize their status as unconvicted persons who at the same time enjoy the right to be presumed innocent as stated in article 14, paragraph 2. The reports of States parties should indicate how -196-