A/67/44 (c) Launch prompt and impartial investigations spontaneously and wherever there is reasonable ground to believe that an act of torture has been committed; (d) Ensure that the Attorney General’s office fulfils its responsibilities to refer cases to the SUP; (e) Ensure that, in cases of alleged torture, suspects are suspended from duty immediately for the duration of the investigation, particularly if there is a risk that they might otherwise be in a position to repeat the alleged act or to obstruct the investigation; (f) Ensure that, in practice, complainants and witnesses are protected from any ill-treatment and acts of intimidation related to their complaint or testimony; (g) Bring to trial the alleged perpetrators of acts of torture or ill-treatment and, if they are found guilty, ensure sentences with penalties that are consistent with the gravity of their acts. In this connection, legislative measures should be taken to guarantee the independence of the judiciary. Witness and victim protection (19) The Committee remains concerned at the absence of an effective mechanism to ensure the protection of and assistance to witnesses and victims of human rights violations and abuses, which has a negative impact on the willingness and ability of witnesses and victims to participate in investigations or to testify in proceedings. In this regard, the Committee is concerned about the impunity in the cases of attacks against witnesses and victims, as illustrated in the case of Gerald Perera and those allegedly involved in his murder following his allegation of torture against several police officers. The Committee notes with concern that a bill on witness and victim protection has been on the parliamentary agenda since 2008. The Committee regrets the scant substantive information provided by the State party regarding the case of Siyaguna Kosgodage Anton Sugath Nishantha Fernando, a complainant in a torture case before the Supreme Court, who was killed by unidentified gunmen on 20 September 2008. The victim had repeatedly requested protection measures for himself and his family against alleged perpetrators (arts. 2, 11, 12, 13 and 15). The Committee reiterates its earlier recommendation (CAT/C/LKA/CO/2, para. 15) that the State party should ensure that witnesses and victims of human rights violations are effectively protected and assisted, in particular by ensuring that perpetrators do not influence protection mechanisms and that they are held accountable. Internally displaced persons (20) The Committee notes that near the end of the armed conflict in 2009 over 280,000 people fled from the northern LTTE-controlled areas to government-controlled territory in Vavuniya, Mannar, Jaffna and Trincomalee districts, where the vast majority of them entered closed military-run internment camps. While noting the information provided by the State party regarding the substantial efforts undertaken to respond to the influx of displaced persons, the Committee remains concerned at the situation of IDPs in the country, especially those who remain in “welfare centres”. According to the State party, IDPs were initially provided with “a secure environment and cared for while they were screened to identify terrorist cadre[s] who had infiltrated the civilian population that was rescued at the conclusion of the armed conflict”. The Committee, however, remains concerned about consistent allegations of torture and ill-treatment during questioning of camp residents by the Criminal Investigation Department (CID) and the Terrorist Investigation Department (TID). The Committee is concerned that these allegations have not been investigated GE.12-44492 91