The State party should compile detailed statistics on the application of pretrial detention and the use of solitary confinement so as to verify the effectiveness of recent amendments to its relevant legislation in practice. The State party should also compile statistics relating to the application of recent amendments to the Immigration Act concerning the detention of foreign nationals. (9) The Committee, while welcoming the recent adoption of a legislative act to regulate the rights of persons staying at the Trandum Alien Holding Centre, notes that the supervisory board which will supervise the operation of the Centre in accordance with that act has yet to be established. The State party should establish the supervisory board for the Trandum Holding Centre envisaged in recent legislation forthwith so as to ensure that the rights of persons held at the Centre are respected at all times. (10) The Committee, while noting that measures have been taken to address recent incidents of excessive use of force by the police, remains concerned about reports on the use of unnecessary force in some instances, and about reports of discriminatory treatment based on ethnicity. The State party should ensure that all appropriate measures are taken to counter the possible persistence of practices involving the use of unnecessary force by the police, and the risks posed by any discriminatory treatment in this regard. Education on the prohibition against torture (11) While noting that different training programmes for police and prison officers which cover human rights and rights of detainees, including the prohibition of torture, are systematically held, the Committee regrets that there is no available information on the impact of the training on reducing incidents of violence and ill-treatment, including incidents that may be racially motivated. The State party should ensure that through educational programmes, law enforcement personnel and justice officials are fully aware of the provisions of the Convention, applicable limitations on the use of force and the need to avoid any discriminatory treatment. Furthermore, the State party should develop and implement a methodology to assess the effectiveness and impact of relevant training programmes on the incidence of cases of torture, violence and ill-treatment. Prompt and impartial investigations (12) The Committee notes that the State party has taken measures to further improve the handling of complaints against the police and the investigation of relevant allegations. Nevertheless, the Committee remains concerned about allegations concerning violations committed by law enforcement officials, including allegations relating to discriminatory treatment, and about the impartiality of subsequent investigations. The State party should closely monitor the effectiveness of the new procedures for the investigation of alleged crimes committed by law enforcement officials, in particular those in which discriminatory treatment based on ethnicity is alleged. The State party is requested to provide detailed information on the results of the ongoing review process in its next periodic report. Provisional measures (13) In light of a recent case in which the State party’s initial response to a request by the Committee for provisional measures was unfavourable, the Committee is concerned about the State party’s general position with regard to requests for provisional measures by the Committee. The State party should consider its position with regard to interim measures requested by the Committee in light of article 22 of the Convention and the principle of good faith, with a view to generally allowing the Committee sufficient time to consider any case that may arise in the future before any action is taken. 28