(c) Ensure that the mechanisms of internal oversight of the police and prisons function properly and are independent and effective. (14) The Committee is concerned at the lack of separate facilities for imprisoned men, women and children, both at the outset of detention and following sentencing. The State party should ensure that men, women and children are kept in separate facilities through their whole period of detention or confinement, in conformity with international standards in force. (15) The Committee is concerned that all persons deprived of their liberty are not ensured prompt access to a lawyer, a doctor and a family member. The State party should ensure that all persons detained are guaranteed a right to contact their families and have immediate access to an independent medical doctor and legal counsel from the very outset of the deprivation of liberty. (16) The Committee is concerned about reports of interprisoner violence and reported cases of sexual violence in the prisons and places of detention. The State party should investigate promptly all allegations of violence within detention or prison establishments, including forensic examinations, and take measures to prevent such incidents. (17) The Committee is concerned about reports that prisoners spend up to 23 hours in their cells without meaningful activities. The State party should take all necessary steps to improve the regime for prisoners. Activities could include work with a vocational value and regular physical exercise. (18) The Committee is concerned that insufficient measures have been taken to review investigation and prosecution procedures and address possible shortcomings and problems. The State party should ensure that the rules for interrogations, instructions, methods and practices concerning persons deprived of their liberty are systematically reviewed. Recommendations emerging from the Offices of the Ombudsman and others conducting regular monitoring should be implemented in a timely manner. (19) The Committee notes, based on the information provided by the State party, that a framework or procedures allowing prisoners to file complaints is in place, but the Committee remains concerned that the procedures differ from one prison to another and that the prisoners are not aware of their right to complain as ensured by article 13 of the Convention. The State party should: (a) Ensure, inter alia, that persons deprived of their liberty are aware of their rights and have the opportunity to complain; (b) Establish an independent mechanism to investigate alleged torture or ill-treatment; and (c) Allow for and provide regular and confidential access to persons deprived of their liberty by competent individuals and bodies such as the judges of competent courts, the Office of the Ombudsman and non-governmental organizations. 15