A/67/44 sentenced to death, including reports that the families of persons sentenced to the death penalty are only informed days or weeks after the execution has taken place, that they are not given the opportunity for a last visit to the prisoner, that the body of the executed prisoner is not handed over to the family and the place of burial is not disclosed to them. Furthermore, the Committee is deeply concerned at reports that some death row prisoners are not provided with fundamental legal safeguards and the discrepancy between reports of the authorities and other, various sources on this matter. Although the Committee notes that a parliamentary working group continues to consider the possibility of establishing a moratorium of the death penalty, it regrets the execution of two death row inmates whose cases were being reviewed by the Human Rights Committee, despite its request for interim measures (communication Nos. 1910/2009 and 1906/2009) (art. 16). The State should take all necessary measures to improve the conditions of detention of persons on death row, and to ensure they are afforded all the protections provided by the Convention. Furthermore, it should remedy the secrecy and arbitrariness surrounding executions so that family members do not have added uncertainty and suffering. The Committee also recommends the State party to consider ratifying the Second Optional Protocol to the International Covenant on Civil and Political Rights, aiming at the abolition of the death penalty. Data collection (28) The Committee regrets the lack of comprehensive and disaggregated data on numerous areas covered by the Convention, inter alia, statistics on complaints, investigations, prosecutions and convictions of cases of torture and ill treatment by law enforcement, security and prison personnel, and enforced disappearances, trafficking and domestic and sexual violence (arts. 12 and 13). The State party should compile and provide to the Committee statistical data relevant to the monitoring of the implementation of the Convention at the national level, including information on complaints, investigations, prosecutions and convictions of cases of torture and ill-treatment, trafficking, domestic and sexual violence, and outcomes of all such complaints and cases, including compensation and rehabilitation provided to victims. Cooperation with United Nations human rights mechanisms (29) The Committee recommends that the State party strengthen its cooperation with United Nations human rights mechanisms, including by permitting visits of the special procedure mandate holders who have made a request, inter alia, the Special Rapporteur on torture and other cruel, inhuman or degrading treatment or punishment, the Special Rapporteur on the situation of human rights defenders, the Special Rapporteur on the promotion and protection of the right to freedom of opinion and expression and the Working Group on Enforced or Involuntary Disappearances. (30) The Committee recommends that the State party consider ratifying the Optional Protocol to the Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment as soon as possible. (31) The Committee recommends that the State party consider making the declarations under articles 21 and 22 of the Convention. (32) The Committee invites the State party to ratify the core United Nations human rights treaties to which it is not yet a party, inter alia, the Convention for the Protection of All Persons from Enforced Disappearance and the Second Optional Protocol to the International Convention on Civil and Political Rights, aiming at the abolition of the death penalty. Noting the commitment made by the State party in the context of the universal periodic review (A/HRC/15/16, paras. 97.1 and 98.3), the Committee recommends that the GE.12-44492 21