- 66 - the outcome of the sworn administrative examinations in respect of the Committee's findings in border guard stations (Ferres, Iasmos, Soufli and Tychero) and special holding facilities for aliens (Mytilini and Venna) (paragraph 20). Conditions of detention recommendations - the Greek authorities to take determined action to implement the recommendations outlined in paragraphs 32 to 34 in respect of the places visited and, if necessary, other places (paragraph 31); - the situation as regards cell occupancy rates, lighting and ventilation to be reviewed, in the light of the remarks made in paragraph 32 (paragraph 32); - the Greek authorities to comply with the CPT's longstanding recommendations that all persons detained overnight be provided with a clean mattress and blankets (and bed sheets during summer months). This implies that arrangements should be made to clean mattress and blankets at appropriate intervals (paragraph 32); - firm instructions to be issued to ensure that cells and sanitary facilities used by detained persons are kept in a reasonable state of cleanliness, and that such persons have ready access to a proper toilet facility at all times. Detained persons should also be in a position to wash and, in appropriate circumstances, to change their clothes and take a shower; persons detained for an extended period should also be provided with toiletries (e.g. soap and towel, toothpaste, etc.) (paragraph 32); - all persons detained for 24 hours or longer to be offered the opportunity of outdoor exercise every day (paragraph 32); - clear instructions to be issued with a view to ensuring that detained persons receive appropriate food at regular intervals (including at least one full meal every day), and that they have ready access to drinking water at all times (paragraph 33); - the Greek authorities to take immediate steps to bring to an end the practice of holding persons, in particular immigration detainees, for prolonged periods in ordinary law enforcement agency detention facilities; they should be accommodated in centres specifically designed for such use, taking due account of the criteria repeatedly advanced by the CPT (paragraph 34); - the Greek authorities to take the necessary steps as regards Petro Rali special holding facility, in the light of the remarks made in paragraph 36 (paragraph 36). comments - there can be no justification for the placement of handcuffs in the manner described (paragraph 25).