CAT/C/39/2 page 47 (t) Juvenile offenders should be separated on the basis of age, physical build and seriousness of the offence, as provided for in the Statute of the Child and Adolescent and the United Nations Convention on the Rights of the Child; (u) Police stations should not be used to accommodate pre-trial detainees and sentenced prisoners beyond the 24-hour period prescribed by the law; (v) Detainees should be separated, depending on whether they are awaiting trial or sentenced, whether they have been sentenced to an open, semi-open or closed regime, as well as by the seriousness of the offence; (w) The State party should ensure adequate funding to recruit sufficient prison personnel. Furthermore, all law enforcement personnel, including police officers and prison guards should receive training on the rights of suspects and detainees and their obligation to respect such rights, including the provisions set forth in the Convention and other relevant international instruments; (x) The State party should review the disciplinary policy regimes for detainees (RDD/RDE) currently being implemented. The State party is reminded that prolonged isolation may amount to torture; (y) An adequate system which would enable all inmates to reduce their sentences through work without any distinction or discrimination should be established in all penitentiary centres; (z) In all cases in which a person alleges torture, the competent authorities should guarantee that a medical examination is carried out in accordance with the Istanbul Protocol on the effective investigation and documentation of torture and other cruel, inhuman or degrading treatment or punishment. Medical doctors should be trained to identify injuries that are characteristic of torture or ill-treatment in accordance with the Istanbul Protocol. Forensic examinations of detainees should be routine and not dependant on a police request; (aa) The technical and scientific independence of forensic doctors in the execution of their forensic work should be guaranteed, including through placing them under the judicial authority or any other independent authority and separating them from all police structures; (bb) The State party is encouraged to ratify the Optional Protocol to the Convention, which would provide for the establishment of a national protection mechanism with the authority to make periodic visits to places of detention; (cc) The State party is also encouraged to accept the right of individual petition to the Committee, by making the declaration envisaged under article 22 of the Convention.