h) Emergency vehicles The majority of PS have an emergency vehicle which is equipped with special space for transporting people deprived of their liberty. During its visits, the NPM regularly checks if this space has been appropriately cleaned and ventilated. During the visits to Ruše PS, Ljutomer PS, and Kozina PS, it was established that the space for transporting people deprived of their liberty had not been cleaned and that there were individual items in it. The MI responded that all police officers were notified that the space for transporting people deprived of their liberty must be checked regularly to ensure that it is clean and free of objects which could pose a danger to the safety of the police officers or the person involved in the proceedings. i) Accessibility of the complaints and compliments book and the responsibility of the competent senior officer for reviewing the entries All police stations have a complaints and compliments book into which visitors or clients at the PS (e.g. being processed by the police or the complainants) can write their opinions (comments, complaints or compliments). The complaints and compliments books must be placed in a visible and specifically marked location, and the responsible senior officer must regularly check them and confirm this with their signature and the date of the inspection. During its visits, the NPM regularly checks the accessibility of the complaints and compliments book and the checking of entries. It established that Gornja Radgona PS, Postojna PS, and Murska Sobota PS did not keep the book in a visible location, and in Ljutomer PS and Koper PS there was no record that the responsible senior officer had reviewed the entries. It was therefore recommended that the complaints and compliments books be placed in a visible location and that the responsible senior officers be reminded to pay attention to regularly reviewing the entries. The MI responded that the complaints and compliments books were placed in a visible location and that the management has been advised to regularly review the entries. Review visits to Gorišnica PS and Ptuj PS During these review visits, we mainly focused on checking the implementation of the recommendations made at our regular visit in 2016. At that time, 19 recommendations were made to Gorišnica PS and Ptuj PS. It was established that of the nine recommendations made to Gorišnica PS, two have been accepted, none remained unaccepted, and seven have been implemented. From the ten recommendations made to Ptuj PS, one has been accepted, one has not been accepted, and eight have been implemented. As during the regular visit to both PS the majority of the faults or deficiencies were established while reviewing randomly chosen cases of detention and the keeping of related documents which are needed for the implementation of detention, the review visits mainly focused on these aspects. During the review visits, minor irregularities or deficiencies were again established with regard to the keeping of official documents which are required for the implementation of detention, a fact again pointed out to the MI. In its response to our repeated recommendations that police officers and senior officers who are responsible for the implementation of detention be alerted to the established faults and deficiencies, the Ministry responded that police officers and senior officers have been alerted to the faults and deficiencies. During the review visit to Ptuj PS, the review of randomly chosen cases of detention also included the case of a detention of two foreign nationals. The foreign nationals were detained at Ptuj PS pursuant to the fourth indent of the first paragraph of Article 64 of the Police Tasks and Powers Act (ZNPPol) from 18/03/2017 at 10.25 to 20/03/2017 at 8.57. It was also established that the foreign nationals remained in the same detention room where they had been detained before, even after the detention ended on 20/03/2017 at 8.57, and until their placement in the Aliens Centre to which they were transported from Ptuj PS at 13.37. We therefore recommended to the Ministry of the Interior (MI) to review this case of detention and notify us of its findings and eventual measures. We specifically asked for an explanation of the legal basis under which the foreign nationals had been placed in the detention room after the expiry of detention, i.e. on 20/03/2017 from 8.57 to 13.37. IMPLEMENTATION OF THE DUTIES AND POWERS OF THE NPM IN 2017 NATIONAL PREVENTIVE MECHANISM UNDER THE OPTIONAL PROTOCOL TO THE UN CONVENTION AGAINST TORTURE AND OTHER CRUEL, INHUMAN OR DEGRADING TREATMENT OR PUNISHMENT 71