CCPR/C/115/D/2064/2011 with article 2 (3), of the Covenant, with regard to Božo Mandić and article 7, read alone and in conjunction with article 2(3), with regard to the author. 10. In accordance with article 2 (3) (a) of the Covenant, the State party is under an obligation to provide the author with an effective remedy. This requires it to make full reparation to individuals whose Covenant rights have been violated. Accordingly, the State party is obligated, inter alia, to (a) intensify its investigations to establish the fate or whereabouts of Božo Mandić, as required by the Law on Missing Persons of 2004, and have its investigators contact the author as soon as possible to obtain the information that he can contribute to the investigation; (b) strengthen its efforts to bring to justice those responsible for his death, without unnecessary delay, as required by the National Strategy for War Crimes Processing; (c) ensure that any necessary psychological rehabilitation and medical care is provided to the author for the psychological harm he has suffered (see para. 3.4); and (d) provide the author with adequate compensation and appropriate measures of satisfaction. The State party is also under an obligation to prevent similar violations in the future and must ensure, in particular, that investigations into allegations of extrajudicial killings and adequate measures of reparation are accessible to the families of missing persons. 11. Bearing in mind that by becoming a party to the Optional Protocol, the State party has recognized the competence of the Committee to determine whether there has been a violation of the Covenant and that, pursuant to article 2 of the Covenant, the State party has undertaken to ensure to all individuals within its territory and subject to its jurisdiction the rights recognized in the Covenant and to provide an effective remedy when it has been determined that a violation has occurred, the Committee wishes to receive from the State party, within 180 days, information about the measures taken to give effect to the present Views. The State party is also requested to publish the present Views and to have them widely disseminated in all three official languages of the State party. 16