The Commission in its own jurisprudence and soft law has indicated what constitutes an effective investigation. The Commission's Guidelines on combating Sexual Violence and its consequences in Africa, detail the requirements for the exercise of an effective investigation in cases involving sexual violence.69 With regard to the investigation of cases of cruel, inhumane and degrading treatment General Comment No. 4 is instructive. It provides that: 146. ff State Parties shall carry out prompt, impartial, independent and thorough investigations when there are reasonable grounds to believe that torture and other ill-treatment has been committed, prosecute those responsible, and provide adequate, effective and comprehensive reparation to victims. Investigations should be in line with the standards enshrined in the UN Manual on the Effective Investigation and Documentation of Torture and Other Cruel, Inhuman or Degrading Treatment or Pimishment (the Istanbul Protocol). " 70 "25. International Human rights law is also instructive in what constitutes an effective investigation into cases of cruel, inhumane and degrading treatment. The United Nations Principles on Effective Investigation and Documentation of Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment (UN Principles on investigation of torture) provide that 147. "2. States shall ensure that complaints and reports of torture or ill-treatment are promptly and effectively investigated. Even in the absence of an express complaint, an investigation shall be undertaken if there are other indications that torture or ill-treatment might have occurred. The investigators, who shall be independent of the suspected perpetrators and the agency they serve, shall be competent and impartial. They shall have access to, or be empowered to commission investigations by, impartial medical or other experts. The methods;::;--:- to cam; out such investigations shall meet the highest professional st riJ.atds, tn: ,; t1gjindings shall be made public. ( / ~ ·~ ~. 3. (a)The investigative authority shall have the yower an/J. ~ligl · n,, obtain all the information necessary to the inquiry. ( y _7ie P._'"t"rs ns ' - cling the " AU ·U 9: investigation shall have at their disposal all the ... ce'ss r~J JU,!l:~ 0ttttY, d technical resources for effective investigation. They shall a ethe-a t · y to oblige all 4 those acting in an official capacihJ allegedly involve E o1..'=> • ill-treatment to ,i-, 69 (2017) Part 4 (https://achpr.au .int/en/node/848) 70 Paragraph 25 page 8 34

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