CAT/C/MAR/CO/4 as well as the legal procedures and basic safeguards in effect in the State party. The State party should, as a matter of urgency, take substantive steps to prevent the aforementioned acts of torture and ill-treatment. It should also announce the introduction of a policy that will produce measurable progress towards the eradication of all torture and ill-treatment by State officials. The State party should put in place stronger measures for ensuring prompt, thorough, impartial and effective investigations into all allegations of torture or ill-treatment of prisoners and persons taken into custody or in any other situation. The Gdeim Izik camp 13. The Committee is particularly concerned by the events surrounding the closure of the Gdeim Izik camp in November 2010, during which several persons were killed, including law enforcement officials, and hundreds of others were arrested. The Committee takes note that the vast majority of the persons who were arrested were later released while awaiting trial, but is gravely concerned by the fact that those trials are to be held in military courts even though the persons concerned are civilians. The Committee is also concerned by the fact that there has not been an impartial, effective investigation to ascertain exactly what occurred and to determine what responsibility may be borne by members of the police or security forces (arts. 2, 11, 12, 15 and 16). The State party should put in place stronger measures for ensuring prompt, thorough, impartial and effective investigations into the violence and deaths that occurred during the dismantlement of the Gdeim Izik camp and ensure that those responsible are brought to justice. The State party should amend its laws to guarantee that all civilians will be tried only in civilian courts. Secret arrests and detention in cases involving security concerns 14. The Committee is concerned by reports that, in cases involving terrorism, legal procedures for arresting, questioning and holding suspects in custody are not always followed in practice. The Committee is also concerned by information pointing to a consistent pattern whereby suspects are arrested by plain-clothes officers who do not clearly identify themselves, taken in for questioning and then held in secret detention facilities, which in practice amounts to incommunicado detention. The suspects are not officially registered and are subjected to torture and other cruel, inhuman or degrading treatment or punishment. They are held in these conditions for weeks at a time without being brought before a judge and without judicial supervision. Their families are not notified of their arrest, of their movements or of their whereabouts until such time as they are transferred to police custody in order to sign confessions that they have made under torture. It is only then that they are officially registered and their cases are processed through the regular justice system on the basis of falsified dates and information (arts. 2, 11, 12, 15 and 16). 15. The Committee takes note of the statements made by the State party during the interactive dialogue to the effect that there is no secret detention centre at DST headquarters in Témara, as confirmed by the three visits made by the Crown Prosecutor-General in 2004 and by several representatives of the National Human Rights Commission and Members of Parliament in 2011. However, the Committee regrets the lack of information on the way in which those visits were organized and the methodology used, since, in view of the many continuing allegations concerning the existence of such a secret detention centre, in the absence of such information, it is not possible to lay to rest the suspicion that such a centre may in fact exist. The matter thus continues to be a source of concern for the Committee. The Committee is also concerned by allegations that secret places of detention are also located within certain official detention facilities. According to allegations received by the 6 GE.11-47997