within each cell is separated by a low internal wall which obstructs visibility from the staff and ensures the privacy of detainees. Although the cells do not have windows, there is plenty of natural light following the replacement of the exterior masonry with glass bricks. Furthermore, an opening at the top of the exterior masonry provides fresh air and ventilation of the cells as required by the international standards. This was the result of the implementation of recommendations made from an earlier visit held in 2015. The place of detention, during the visit, was generally clean and tidy, free from any unpleasant smells. The detention centre provides an entertainment area with an opening on the ceiling, thus allowing natural ventilation and natural light; however, it was found that the detention centre does not provide an outdoor exercise area, contrary to the international standards and the recommendations of the European Committee for the Prevention of Torture (CPT) requiring at least one hour of outdoor exercise for each person detained for a period of more than 24 hours. The visit further revealed that detainees for criminal offences are detained in the same place with administrative detainees (returnees), which is contrary to the international principles for the treatment of detainees stipulating that persons detained on the basis of a decision of an administrative body solely for the purpose of their return to their country or any other country must be detained in a separate place allowing no contact with persons detained for the purpose of investigating criminal offences. 21