CRC/C/BOL/CO/4 page 18 74. The Committee recommends that the State party take urgent measures to address and monitor exploitative forms of child labour by: (a) Taking measures to prevent children under the minimum age from working in the formal and informal sector, sugar cane and brazil nut harvesting and mining industry; (b) Improving monitoring mechanisms in order to enforce existing labour laws and protect children from economic exploitation; (c) Creating and implementing norms to regulate apprenticeships; (d) Ensuring that children and their families living in particularly vulnerable areas have access to better opportunities for human and economic development, and that efforts to eradicate extreme poverty put children at the centre of all initiatives; (e) Seeking technical assistance from ILO-IPEC, UNICEF, relevant NGOs and development partners for the development of reintegration programmes for exploited children. Children in street situations 75. The Committee is concerned about the high number of children in street situations in urban areas, who are constantly exposed to violence, sexual exploitation, discrimination, drug consumption and police brutality. 76. The Committee recommends that the State party take urgent steps to address the issue of children in street situations in cooperation with the children themselves, such as the elaboration of a national plan of action which should include prevention and response programmes and services linked to extreme poverty eradication efforts. The Committee recommends that the authorities work closely with the Municipal Child Defence Offices to facilitate contact with their families or provide alternative care solutions if this is not possible, and ensure access to health care, school programmes and preparation for work, as well as legal and psychological services. Sexual exploitation and abuse 77. The Committee is concerned at the scarcity of data available on the number of children victims of sexual exploitation or abuse, or on cases of perpetrators of these crimes who have been prosecuted and convicted. The Committee is further concerned at the sexual abuse of Guarani girls and other indigenous groups serving in landowners’ homes or living in conditions that make them vulnerable to being sexually exploited. 78. The Committee recommends that the State party: