46 may lead them to commit criminal acts, or it has elements to conclude that they have committed them, in specific cases, they must go to an extreme with criminal prevention measures.78 The State must assume its special position of protector with greater care and responsibility, and it must take special measures oriented toward the principle of the child’s greater interest.79 117. The facts of the present case occurred in reason of the victims’ condition of people in situations of social risk, which proves that the State did not provide Marco Antonio Servellón García or Rony Alexis Betancourth Vásquez with an environment that would protect them from violence and abuse, nor did it allow them access to basic services and goods, in such a way that said absence without doubt deprived the minors of their possibility to emancipate, develop, and become adults that could determine their own future. * * * 118. The Court cannot leave unmentioned that the facts of the present case are part of a situation in which a high level of impunity prevails in criminal acts carried out both by state agents and individuals (supra paras. 79(2) and 79(4)), which creates a propitious field for violations like those of this case to keep on occurring. 119. The Court has established that one of the conditions to effectively guarantee the rights to life, humane treatment, and personal liberty is the compliance with the duty to investigate the violations to the same, which derive from Article 1(1) of the Convention, along with the substantive right that must be protected, or guaranteed.80 At the light of this duty, once the state authorities become aware of the fact, they must begin a serious, impartial, and effective investigation ex officio and without delay.81 This investigation must be carried out through all legal means available and oriented to the determination of the truth and the investigation, persecution, capture, prosecution, and in its case, punishment of all those responsible for the facts.82 120. This Tribunal has specified that the efficient determination of truth within the framework of the obligation to investigate a death that could have been the result of an extrajudicial killing, must occur as of the moment of the first proceedings with all due precision. The Court has mentioned that the Manual on the Prevention and 78 Cfr. Case of the “Street Children” (Villagrán Morales et al.), supra note 69, para. 197; and Guidelines from the United Nations for the prevention of juvenile delinquency (Riad Guidelines). Adopted and proclaimed by the UN General Assembly in its ruling 45/112 of December 4, 1990, Chapter III, para. 9. 79 Cfr. Case of the Gómez Paquiyauri Brothers, supra note 63, paras. 124, 163 through 164, and 171; Case of Bulacio, supra note 54, paras. 126, 133, and 134; Case of the “Street Children” (Villagrán Morales et al.), supra note 69, paras. 146 and 195; and Juridical Condition and Human Rights of the Child. Advisory Opinion OC-17/02, supra note 72, para. 60. 80 Cfr. Case of Ximenes Lopes, supra note 3, para. 147; Case of the Ituango Massacres, supra note 3, para. 297; and Case of Baldeón García, supra note 3, para. 92. 81 Cfr. Case of Montero Aranguren et al., supra note 12, para. 79; Case of Ximenes Lopes, supra note 3, para. 148; and Case of the Ituango Massacres, supra note 3, para. 296. 82 Cfr. Case of Ximenes Lopes, supra note 3, para. 148; Case of Baldeón García, supra note 3, para.94; and Case of the Pueblo Bello Massacre, supra note 9, para. 143.