 Berlin Main Station Federal Police District Office Lübeck Federal Police Station  Kiel duty room  Harrislee duty room  Flensburg duty room  Hanover Federal Police District Office  Hanover Airport Federal Police District Office  Lüneburg Federal Police Station  Hildesheim Federal Police Station  Göttingen Federal Police Station  Bad Bramstedt Hanover 4.1.1 Cooperation with the Federal Ministry of the Interior After making inspection visits to facilities of the Federal Police, the Federal Agency had to wait for several months in some cases before receiving the written information which it had requested from the Federal Ministry of the Interior on the facilities which it had visited. This considerably delayed the report on the visit. There were discussions in October 2012 between the Director of the Federal Agency and the head of division for Command and operational matters of the Federal Police in the Federal Ministry of the Interior, amongst other things in order to discuss cooperation going forward. In order to make optimum use of its limited resources, the Federal Agency furthermore asked to be informed when detention cells are no longer used for a prolonged period, or indeed permanently, as was the case in Leipzig/Halle Airport Federal Police Station and in Magdeburg Federal Police District Office. 4.1.2 Visiting procedure The customary visiting procedure has already been described in general terms at III.2 above. Since the inspection visits to particular Federal Police facilities are not described, the specific procedure followed in the visits is set out in greater detail below. The Federal Agency carried out an initial exchange with the head of the facility at the beginning of each inspection visit. It then visited the entire detention area, consisting of detention cells, questioning and search rooms and transport rooms in airport facilities in which returnees are accommodated until they are transferred onto an aircraft. In doing so, the Federal Agency also inspected the detention documents. Furthermore, it discussed workplace-specific questions with the officers on the site. The Federal Agency did not find any persons being detained 23