22 Even though the nationality is only recommended by a Frontex officer, it is taken for granted by the Greek authorities. The detainee is not informed about the nationality under which he or she has been registered and has no means to challenge it. We saw cases where Afghans were registered as Algerians, Turks or Iranians, Algerian and Moroccans as Syrians, Sudanese as Nigerian, Iraqis as Syrians, francophone Africans as Nigerian, Palestinians as Syrians. In cases where the GCR-lawyers were informed about the flawed registration they have repeatedly requested a second screening. The majority of refugees, who were re-screened were assigned a different nationality. For some nationalities the identification procedure also includes the visit of officers from foreign embassies (e.g. embassies of Nigeria and Santo Domingo). During the last year, officers from the Nigerian embassy visited the border police stations and detention centres in Evros seeking to identify their nationals in detention. In reported cases, one Sierra Leonean (M.K.) and one Congolese (Y.A.) were identified by the Nigerian embassy officers as Nigerian and were at risk of deportation to, or even deported to Nigeria61. Errors in registration expose detainees to the risk of deportation to the wrong country. Afghans, for instance, who are registered as Iranians risk readmission to Turkey. If not sent back to Iran, they can be deported to Afghanistan. French speaking Africans, who’ve been identified and registered as Nigerians, can be deported to Nigeria. H.M. from Afghanistan was registered as Iranian. Even though GCR requested a re-screening he was returned to Turkey. There he was recognised as Afghan and deported to Kabul.62 A.A. and M.K. from Sudan were registered as Nigerians. They were interviewed in English, despite the fact that their mother tongues were Arabic and Fur. During their detention in Venna in January 2011 a GCR-lawyer sent a fax requesting the re-screening of them.63 In neither of the two Detainees are filling in registration forms 61 The »identification« of the nationality by representatives of the Nigerian Embassy took place in the Aliens Department in Athens in 2011. Both of the cases ( M.K. and Y.A.) were francophone and provided to GCR lawyers documents proving their nationality. 62 See: Chapter 4.1. case of H.M. 63 GCR fax ref. no. 8/2011