A/HRC/22/52 report. He further invites the United Kingdom to make a public statement setting out a timetable for the start of the proposed judge-led inquiry, indicating what its powers and terms of reference will be. The Special Rapporteur recommends that the shortcomings in the terms of reference for, and the powers of, the Gibson Inquiry should be remedied in the resumed inquiry, and commends to the attention of the United Kingdom the principles laid down in the present report, and in the report of the Special Rapporteur on torture on best practice for commissions of inquiry into allegations of this nature.109 IV. Conclusions and recommendations 50. The Special Rapporteur accordingly endorses and strongly urges all Member States of the United Nations to accept and implement the recommendation made to the Human Rights Council in February 2010 by the United Nations Joint study on global practices in relation to secret detention in the context of countering terrorism, that: Those individuals found to have participated in secretly detaining persons and in any unlawful acts perpetrated during such detention, including their superiors if they have ordered, encouraged or consented to secret detentions, should be prosecuted without delay and, where found guilty, given sentences commensurate with the gravity of the acts perpetrated.110 51. The Special Rapporteur welcomes the decision of the CTITF Working Group on Protecting Human Rights while Countering Terrorism to establish a series of regional workshops aimed at strengthening the capacity of Member States to secure the right to truth and the principle of accountability for human rights violations in the counter-terrorism context, and calls upon Member States to support this initiative. 52. The Special Rapporteur calls upon all Member States, and in particular those States credibly alleged to have facilitated the use of their airspace and landing facilities for CIA rendition flights, to review their domestic law and practice, including a review of the investigations, if any, that have so far been conducted by their national authorities, in order to bring them into conformity with the principles described in the present report. 53. In addition, the Special Rapporteur: (a) Calls upon those States that have so far failed to provide substantive responses to the inquiries made by the joint mandate-holders by way of follow-up to the United Nations Joint Study on Secret Detention to do so without further delay; (b) Calls upon the Governments of Lithuania, Morocco, Poland, Romania and Thailand urgently to establish (or where applicable, to re-open) effective independent judicial or quasi-judicial inquiries into credible allegations that secret CIA “black sites” were established on their territories; to identify any public officials who may have authorized or collaborated in the establishment or operation of these 109 110 Report of the Special Rapporteur on torture and other cruel, inhuman or degrading treatment or punishment, Juan E. Mendez, to the United Nations Human Rights Council, 18 January 2012, A/HRC/19/61. See to the same effect, United Nations Basic Principles on Remedy and Reparation for Gross Human Rights and Humanitarian Law Violations, op. cit., footnote 33, para. 4; and Flautre Report, op. cit., footnote 15, para 5. See also ICCPR, Human Rights Committee General Comment No. 31, CCPR.C.21/Rev.1/Add.13, 26 May 2004, at para. 18. 19