JUDGMENT OF 25. 7. 2018 –– CASE C-220/18 PPU GENERALSTAATSANWALTSCHAFT (CONDITIONS OF DETENTION IN HUNGARY) 107 Consideration must therefore be given to whether and, if so, to what extent such an assurance may be taken into account by the executing judicial authority in taking its decision on the surrender of the person concerned. The taking into account of assurances given by the authorities of the issuing Member State 108 It should be recalled that Article 15(2) of the Framework Decision explicitly enables the executing judicial authority, if it finds the information communicated by the issuing Member State to be insufficient to allow it to decide on surrender, to request that the necessary supplementary information be furnished as a matter of urgency. In addition, under Article 15(3) of the Framework Decision, the issuing judicial authority may at any time forward any additional useful information to the executing judicial authority. 109 Moreover, in accordance with the principle of sincere cooperation set out in the first subparagraph of Article 4(3) TEU, the European Union and the Member States are, in full mutual respect, to assist each other in carrying out tasks which flow from the Treaties (judgment of 6 September 2016, Petruhhin, C-182/15, EU:C:2016:630, paragraph 42). 110 In accordance with those provisions, the executing judicial authority and the issuing judicial authority may, respectively, request information or give assurances concerning the actual and precise conditions in which the person concerned will be detained in the issuing Member State. 111 The assurance provided by the competent authorities of the issuing Member State that the person concerned, irrespective of the prison he is detained in in the issuing Member State, will not suffer inhuman or degrading treatment on account of the actual and precise conditions of his detention is a factor which the executing judicial authority cannot disregard. As the Advocate General has noted in point 64 of his Opinion, a failure to give effect to such an assurance, in so far as it may bind the entity that has given it, may be relied on as against that entity before the courts of the issuing Member State. 112 When that assurance has been given, or at least endorsed, by the issuing judicial authority, if need be after requesting the assistance of the central authority, or one of the central authorities, of the issuing Member State, as referred to in Article 7 of the Framework Decision, the executing judicial authority, in view of the mutual trust which must exist between the judicial authorities of the Member States and on which the European arrest warrant system is based, must rely on that assurance, at least in the absence of any specific indications that the detention conditions in a particular detention centre are in breach of Article 4 of the Charter. 113 In the present instance, the assurance given by the Hungarian Ministry of Justice on 20 September 2017, and repeated on 27 March 2018, that the person concerned will not be subjected to any inhuman or degrading treatment on account of the conditions of his detention in Hungary was, however, neither provided nor endorsed by the issuing judicial authority, as the Hungarian Government explicitly confirmed at the hearing. 114 As the guarantee that such an assurance represents is not given by a judicial authority, it must be evaluated by carrying out an overall assessment of all the information available to the executing judicial authority. 115 In that regard, the Court observes that the assurance given by the Hungarian Ministry of Justice appears to be borne out by the information in the possession of the Bremen Public Prosecutor’s Office. In response to questions put by the Court, that office explained at the hearing that that information, which has been gleaned, in particular, from the experience gained in the course of surrender procedures carried out before delivery of the judgment of 5 April 2016, Aranyosi and ECLI:EU:C:2018:589 19