CAT/C/TUR/CO/4 resources for that purpose. The State party should encourage the Institution to apply to the International Coordinating Committee of National Institutions for the Promotion and Protection of Human Rights for accreditation. Training 29. While appreciating the information provided by the State party about human rights training for members of the police, gendarmerie and prison staff, the Committee is concerned at the lack of information on the evaluation of the impact of those programmes. The Committee regrets the scant information provided on training programmes for professionals directly involved in the investigation and documentation of torture, as well as medical and other personnel dealing with detainees, on how to detect and document physical and psychological sequelae of torture and ill-treatment (art. 10). 30. The State party should: (a) Further develop mandatory in-service training programmes to ensure that all public officials, in particular law enforcement officials, prison staff and medical personnel employed in prisons and psychiatric institutions, are well acquainted with the provisions of the Convention and are fully aware that violations will not be tolerated and will be investigated, and that those responsible will be prosecuted and, on conviction, appropriately sanctioned; (b) Ensure that all relevant staff, including medical personnel, are specifically trained to identify cases of torture and ill-treatment, in accordance with the Manual on the Effective Investigation and Documentation of Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment (the Istanbul Protocol); (c) Develop and apply a methodology for evaluating the effectiveness of educational and training programmes relating to the Convention and the Istanbul Protocol. Conditions of detention 31. While welcoming the efforts made by the State party to improve conditions of detention in prisons, the Committee is concerned that overcrowding and inadequate health-care services remain a problem in the prison system and that the State party has taken insufficient measures to mitigate the dramatic increase in its prison population through the use of alternative measures to deprivation of liberty. It is also concerned at reported arbitrary practices such as cell raids at any hour of the day, illegal searches and denial of phone calls, in particular in the Tekirdag F-type prisons. In addition, the Committee notes with concern that solitary confinement may be imposed for up to 20 consecutive days (arts. 2, 11 and 16). 32. The State party should: (a) Continue its efforts to alleviate the overcrowding of penitentiary institutions, including through the application of non-custodial measures; (b) Ensure that all persons deprived of their liberty receive timely and appropriate medical treatment; (c) Ensure independent and prompt investigations into allegations of deliberate denial of health care to persons deprived of their liberty and ensure that any prison officials responsible for such conduct are subject to prosecution or disciplinary action; 8