2 approximate 15 members states of the system, constitutes a fact of special importance for the protection of human rights, not only at the domestic but also at the international level. 4. The forced disappearance of Renato Ticona Estrada is among the facts that were considered to be violations in this case. It is not necessary to repeat now the characteristics of the forced disappearance as a violation of several rules of the Convention, since it is a continuous or permanent violation inasmuch as the deprivation of liberty does not cease and the luck of the victim is established. In turn, we deem it is appropriate to emphasize that there is forced disappearance – meaning, a violation of very serious human rights—regardless of the fact that it may committed within the context of systematic violations or if it occurs only one time, in isolation. 5. International human rights Law does not establish a distinction regarding the last concept – which could be relevant for other purposes- and considers any type of forced disappearance to be a violation. Regarding this issue, it seems clear and obvious the description contained in Article II of the Inter-American Convention on this regard, of June 9, 1994. In that description, which has intended to expand -- and not reduce-the protection of human rights, the existence of disappearance is not conditional upon the context in which the unlawful act occurs. 6. The foregoing has been the constant characterization expressed by different bodies that protect human rights, at the international and the Inter-American level. As a result of that, it has been possible to process cases of forced disappearances in circumstances of very different and several contexts allowing, in this way, a broader and more strict sphere of protection. Hence, the definition created in the `80 by the Working Group on Enforced or Involuntary Disappearances, the first mechanism developed for the international system for the protection of human rights to face this phenomenon (1980),140 was oriented to inform, in detail, on the different elements of the institution of forced disappearance, without including the motive of the perpetrators, the context or whether the violation was systematic or massive. It is similar the definition expressed by the Declaration on the Protection of All Persons from Enforced Disappearances of the United Nations, 1992 140 141 and the definition of the Resolution Nº 20 (XXXVI) of February 29, 1980, of the United Nations Human Rights Commission. United Nations Assembly General, Resolution 47/133 of December 18, 1992. In the declaration, forced disappearance"… occur, in the sense that persons are arrested, detained or abducted against their will or 141