(e) Numerous ongoing challenges in gathering, aggregating, and analysing police and administration of justice-sector statistics in ways that ensure adequate information as to personnel, agencies, or specific facilities responsible for alleged abuses; (f) The protective value of prompt and impartial investigations into allegations of abuse, and in particular information about effective parliamentary or national human rights commissions or ombudspersons as investigators, especially for instances of unannounced inspections, as well as the utility of permitting non-governmental organizations to conduct prison visits; (g) The need for information about specific professional police training programmes, with clear-cut instruction as to the prohibition against torture and practice in identifying the sequellae of torture; (h) The lacunae in statistics and other information regarding offences, charges and convictions, including any specific disciplinary sanctions against officers and other relevant personnel, particularly on newly examined issues under the Convention, such as the intersection of race and/or ethnicity with ill-treatment and torture, the use of “diplomatic assurances” for persons being returned to another country to face criminal charges, incidents of sexual violence, complaints about abuses within the military, etc. 48. The chart below details, as of 19 May 2006, the end of the Committee’s thirty-sixth session, the state of the replies with respect to follow-up. 77