CRC/C/GTM/CO/3-4 (d) Establish a system of independent monitoring of all detention centres, as required by the Optional Protocol to the Convention against Torture, ratified by the State party on 9 June 2008; (e) Take adequate steps to shorten criminal proceedings in order to reduce the time spent in pre-trial detention; (f) Increase the number of specialized judges, judges for execution of sanctions and juvenile appellate courts, and ensure that those working with children in the juvenile justice system receive appropriate training; and (g) Make use of the technical assistance tools developed by the United Nations Interagency Panel on Juvenile Justice and by its members, which include UNODC, UNICEF, OHCHR and NGOs, and seek technical advice and assistance in the area of juvenile justice from members of the Panel. Protection of witnesses and victims of crimes 100. The Committee recommends that the State party ensure, through adequate legal provisions and regulations, that all child victims and/or witnesses of crimes, for example victims of abuse, domestic violence, sexual and economic exploitation, or who are persecuted by the Maras, victims of abduction or trafficking and witnesses of such crimes, be provided with the protection required by the Convention and that it take fully into account the United Nations Guidelines on Justice in matters involving child victims and witnesses of crime (annexed to Economic and Social Council resolution 2005/20 of 22 July 2005). Children belonging to minority or indigenous groups 101. The Committee is concerned at the exclusion of Maya, Garifuna and Xinca children in relation to access to basic services necessary for their comprehensive development, such as registration in the civil registry, health services and education adapted to their culture, history and languages, the difficult access to land and the lack of respect for their traditional lands. The Committee is concerned that the Convention and its two Optional Protocols have not yet been translated into the indigenous languages, preventing these populations from taking action to demand the fulfilment of the rights of the child. The Committee shares the concern expressed by the Committee on the Elimination of Racial Discrimination (CERD/C/GTM/CO/12-13, para. 11) that the State party continues to allow indigenous peoples to be dispossessed of land that has historically belonged to them. 102. The Committee recommends that: (a) The State party ensure that indigenous children are registered in the civil registry, and that they receive health services and education adapted to their culture, history and languages; (b) In the exceptional cases in which the relocation of indigenous peoples is considered necessary, the State party monitor the protection of children; (c) The State party provide relocation sites equipped with basic utilities, such as drinking water, electricity, and washing and hygiene facilities, and with appropriate services, including schools, health-care centres and means of transportation. In this regard, the Committee reiterates the recommendation expressed by the Committee on the Elimination of Racial Discrimination; and (d) The State party take into account the Committee’s general comment No. 11 (2009) on indigenous children and their rights under the Convention. 18