32 UNITED NATIONS STANDARD MINIMUM RULES FOR THE TREATMENT OF PRISONERS B. Prisoners with mental disabilities and/or health conditions Rule 109 1. Persons who are found to be not criminally responsible, or who are later diagnosed with severe mental disabilities and/or health conditions, for whom staying in prison would mean an exacerbation of their condition, shall not be detained in prisons, and arrangements shall be made to transfer them to mental health facilities as soon as possible. 2. If necessary, other prisoners with mental disabilities and/or health conditions can be observed and treated in specialized facilities under the supervision of qualified health-care professionals. 3. The health-care service shall provide for the psychiatric treatment of all other prisoners who are in need of such treatment. Rule 110 It is desirable that steps should be taken, by arrangement with the appropriate agencies, to ensure if necessary the continuation of psychiatric treatment after release and the provision of social-psychiatric aftercare. C. Prisoners under arrest or awaiting trial Rule 111 1. Persons arrested or imprisoned by reason of a criminal charge against them, who are detained either in police custody or in prison custody (jail) but have not yet been tried and sentenced, will be referred to as “untried prisoners” hereinafter in these rules. 2. Unconvicted prisoners are presumed to be innocent and shall be treated as such. 3. Without prejudice to legal rules for the protection of individual liberty or prescribing the procedure to be observed in respect of untried prisoners, these prisoners shall benefit from a special regime which is described in the following rules in its essential requirements only. Rule 112 1. Untried prisoners shall be kept separate from convicted prisoners. 2. Young untried prisoners shall be kept separate from adults and shall in principle be detained in separate institutions.