211. The Complainants aver that the random arrest and arbitrary detention of Victims in police training camps and prisons in and around Cairo, with no specific reasons given for the detention, being unable to contact their families and being denied information about their whereabouts and not having access to lawyers or a court to determine the lawfulness of their detention, amounted to a violation of Article 6. 212. The submissions of the State are set out under the discussion on Article 5 above, and include that the removal was carried out to provide care to the persons after the breakup of the protest, and that persons with legal residence permits, women and children and Sudanese from Darfur were released on the day following the arrest. In relation to those remaining in detention, they were granted visits from UNHCR and were released on 11 February 2006 following the finalization of the investigations into the occurrences by the General Prosecution Authority. The State in addition alleges that the Regional Director of the UNHCR made a statement in which he indicated that the protestors included persons who do not meet the refugee criteria as well as illegal migrants and that he was concerned about the security of his staff members. 213. As discussed above, under international law, governments do have a right to detain non-citizens for migration-related reasons in certain limited circumstances, but only if the detention complies with international and regional human rights standards related to the restriction of movement. 61 The principles which apply in relation to the detention of asylum seekers include the principle of national sovereignty, the right to seek and enjoy asylum and the right to be protected against arbitrary and unlawful detention. It is within the prerogative of the State to decide where refugees and asylum seekers may reside, and it can confine their movement, particularly in cases where their status has not yet been ascertained. 214. UNHCR has further held that “[i]f necessary, detention may be resorted to only on grounds prescribed by law to verify identity; to determine the elements on International Detention Coalition ‘What is immigration detention? And other frequently asked questions’ https://idcoalition.org/aboutus/what-is-detention/. In its Revised Guidelines on Applicable Criteria and Standards relating to the Detention of Asylum Seekers (1999), UNHCR defines detention as follows: “Confinement within a narrowly bounded or restricted location, including prisons, closed camps, detention facilities or airport transit zones, where freedom of movement is substantially curtailed, and where the only opportunity to leave this limited area it to leave the territory.” 61 58