89 253. For this, given that the Expiry Law lacks the effects because of its incompatibility with the American Convention and the Inter-American Convention on Forced Disappearance of Persons, in as much as it can impede the investigation and possible sanction of those responsible for serious human right violations, the State must guarantee that this never again becomes an impediment for the investigation of the facts at hand, and of the identification, and if applicable, punishment of those responsible for the facts and similar serious violations of human rights that took place in Uruguay. 254. Consequently, the State should ensure that no other analogous norm, such as a statute of limitations, non-retroactivity of the criminal law, res judicata, ne bis in idem or any other similar law exonerating responsibility, be applied and that the authorities refrain from carrying out acts that would implicate the obstruction of the investigative process. 255. The State must conduct the investigation in an effective manner so that it is done in a reasonable amount of time, be it by ordering either the necessary speed to the existing open claim or by ordering a new one, depending on what is most beneficial to the investigation, and furthermore, ensuring that the competent authorities conduct the corresponding ex officio investigations, having at their disposal the necessary authorization and remedies, allowing those of whom are part of the investigation, among them the victim’s relatives, witnesses, and administrators of justice, be assured the due guarantees of security. 309 256. Particularly, the Court considers that, with basis in its jurisprudence310, the State must ensure the full access and capacity to act of the next of kin of the victims in every stage of the investigation and prosecution of those responsible. Additionally, the result of the corresponding proceedings should be disseminated publically in order for Uruguayan society to know of the facts of the present case, as well as to know those responsible for them. 311  B.2 Determination of the whereabouts of María Claudia 257. The Commission and the representatives requested that the State be ordered to employ all necessary means to determine the whereabouts of Maria Claudia Garcia de Gelman, or of her bodily remains; whatever the case may be. The representatives requested, in addition, that the State “make available to the justice system, as well as to her next of kin, and to Uruguayan society as a whole,” the documents in its possession that pertain to grave human rights violations committed during the de facto government.                                                          309 Cf. Velásquez Rodríguez. Merits, supra note 20, para. 174; Case of Rosendo Cantú et al., supra note 9, para. 211; Case of Ibsen Cárdenas and Ibsen Peña, supra note 9, para. 237-c, and Case of Gomes Lund et al. (Guerrilha do Araguaia), supra note 16, para. 256-c. 310 Cf. Case of del Caracazo V. Venezuela. Reparations and Costs. Judgment of August 29, 2002. Series C No. 95, para. 118; Case of Ibsen Cárdenas and Ibsen Peña, supra note 9, para. 238, and Case of Gomes Lund et al. (Guerrilha do Araguaia), supra note 16, para. 257. 311 Cf. Case of del Caracazo. Reparations and Costs, supra note 310, para. 118; Case of Manuel Cepeda Vargas, supra note 11, para. 217, and Case of Ibsen Cárdenas and Ibsen Peña, supra note 9, para. 238.