10 place from 29 September to 12 October 2013. The delegation, composed of representatives from the three participating organisations, carried out the mission with the support of NGOs in both countries (Turkey: Helsinki Citizen Assembly-Refugee Advocacy Support Program (HCA-RASP), Multeci der, Human Rights Association-IHD; Greece: Greek Human Rights league, the Greek Council for Refugees, the Village of All Together). Much of the information gathered is not easily available to the general public. Even when it is available, it is often not accessible because of its technical or confusing nature (contradictions, use of acronyms, etc.). Some of the documents requested from Frontex were not made available by the agency, but the organisations did have access to parts of the Operation Poseidon Operational Plans for 2012. The information they contain raised many questions which are explored in this report. The field investigation supplemented this information, and contextualised it within the broader framework of migration policy and border control in Turkey and Greece. For the sake of clarity in view of the different names used in different countries, but also as a reflection of our positioning, the report refers to places of confinement as detention centres. Whether migrants are held in a deportation centre (“pre-removal centre” in the case of Greece) following an administrative decision or in a “reception” centre when they arrive on the territory for identification purposes, it should be recalled that these spaces are first and foremost places of deprivation of liberty. Various interviews, some semi-structured and others informal, were conducted with migrants in Turkey and in Greece17 and the various offices of the Greek coastguards, representatives of the Office of the United Nations High Commissioner for Refugees (UNHCR) in Greece and Turkey, the International Organisation for Migration (IOM) in Ankara (Turkey), local migrants’ rights organisations, representatives of the European Commission in Turkey and the office of Frontex in Piraeus (Greece). Despite the Greek administration’s silence to our multiple requests for permission to enter the Greek centres in Amygdaleza, Filakio, Chios, Lesbos 17 30 interviews in Greece and 39 in Turkey.