- 31 - immediate steps to be taken to:  keep the period of time spent by persons detained for deportation in police directorates/stations to the absolute minimum. Whenever it becomes clear that the deportation procedure in respect of a foreign national is going to take longer than a week, the person concerned should be transferred to a detention facility specifically designed for holding illegal aliens;  ensure that the official capacities of the cells in police directorates/stations are observed, and that no detainees are obliged to sleep in the corridors of detention facilities (paragraph 36); - the Greek authorities to explore the possibility of assigning female officers to police detention facilities where women are held (paragraph 36); - urgent action to be taken to relocate Piraeus Transfer Centre for prisoners in a place offering better conditions of detention (paragraph 37); - immediate action to be taken at the Athens Transfer Centre for prisoners in order to:  reduce the establishment’s official capacity;  supply all detainees with clean mattresses and blankets;  improve the ventilation and artificial lighting in the cells;  ensure regular disinfecting and cleaning of the premises;  repair the toilet facilities and ensure a regular supply of hot water;  ensure that prisoners are supplied with an appropriate range of personal hygiene items (paragraph 39); - means to be sought to enable prisoners held at the Athens Transfer Centre to have outdoor exercise on a daily basis (paragraph 39); - steps to be taken to ensure that prisoners in transit are being provided with food which is sufficient in quantity and quality (paragraph 40). requests for information - the progress made towards completing the refurbishment of the Hellenikon Holding Centre for Aliens at Athens Airport, and the envisaged date of its re-opening (paragraph 28); - more information on the holding area for foreign nationals which it is envisaged to set up at the new Athens International Airport (paragraph 30);