CRC/C/CYP/CO/3-4 at risk at an early stage by using alternative measures to detention such as diversion, probation, counselling, community service or suspended sentences, wherever possible; (c) Ensure that children, including those between the ages of 14 and 18 years, are not subject to the adult justice system, regardless of the nature of the offence committed. Child victims and witnesses of crimes 56. While noting that the State party does have a child victim and criminal witness protection programme, the Committee is concerned at the absence of information on, inter alia, the age of the victims, type of crimes and details of offenders. It further notes that in the absence of such information, an evaluation on the efficacy of this protection programme is not feasible. 57. The Committee recommends that the State party systematically collect data, including on victim age, offence committed and offender demography with a view to including this in its next periodic report and utilizing it to evaluate the effectiveness of its current criminal witness or victim protection programme. In doing so, the Committee recommends that the State party ensure, through adequate legal provisions and regulations, that all children victims and or witnesses of crimes, for example, children victims of abuse, domestic violence, sexual and economic exploitation, abduction and trafficking and witnesses of such crimes, including those perpetrated by State and non-State actors, are provided with the protection required by the Convention and that the State party take fully into account the United Nations Guidelines on Justice in Matters involving Child Victims and Witnesses of Crime in the drafting and enactment of such legal provisions and regulations. H. Ratification of international human rights instruments 58. The Committee encourages the State party to sign the Optional Protocol to the Convention on the Rights of the Child on a communications procedure and encourages the State party, in order to further strengthen the fulfilment of children’s rights, to accede to the Optional Protocol and all core human rights instruments, including the International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families. I. Cooperation with regional bodies 59. The Committee recommends that the State party cooperate with the Council of Europe for the implementation of the Convention and other human rights instruments, both in the State party and in other Council of Europe member States. J. Follow-up and dissemination 60. The Committee recommends that the State party take all appropriate measures to ensure that the present recommendations are fully implemented, inter alia, by transmitting them to the members of the Government, the Parliament, regional bodies and other local governments, when applicable, for appropriate consideration and further action. 61. The Committee further recommends that the combined third and fourth periodic report and written replies submitted by the State party and the related 13