on. It has also stated that unacknowledged detention is a complete negation of these guarantees and discloses a very grave violation of Article 5 (see {Cicek} v. Turkey, No. 25704/94, § 164, 27 February 2001, and Luluyev, cited above, § 122).
111. The Court has found that Zurab Iriskhanov was abducted by State servicemen on 19 June 2002 and has not been seen since. His detention was not acknowledged, was not logged in any custody records and there exists no official trace of his subsequent whereabouts or fate. In accordance with the Court's practice, this fact in itself must be considered a most serious failing, since it enables those responsible for an act of deprivation of liberty to conceal their involvement in a crime, to cover their tracks and to escape accountability for the fate of a detainee. Furthermore, the absence of detention records, noting such matters as the date, time and location of detention and the name of the detainee, as well as the reasons for the detention and the name of the person effecting it, must be seen as incompatible with the very purpose of Article 5 of the Convention (see Orhan, cited above, § 371).
112. The Court further considers that the authorities should have been more alert to the need for a thorough and prompt investigation of the applicants' complaints that their son had been detained and taken away in life-threatening circumstances. However, the Court's findings above in relation to Article 2 and, in particular, the conduct of the investigation leave no doubt that the authorities failed to take prompt and effective measures to safeguard him against the risk of disappearance.
113. In view of the foregoing, the Court finds that Zurab Iriskhanov was held in unacknowledged detention without any of the safeguards contained in Article 5. This constitutes a particularly grave violation of the right to liberty and security enshrined in Article 5 of the Convention.
VI. Alleged violation of Article 13 of the Convention
114. The applicants complained that they had been deprived of effective remedies in respect of the aforementioned violations, contrary to Article 13 of the Convention, which provides:
"Everyone whose rights and freedoms as set forth in [the] Convention are violated shall have an effective remedy before a national authority notwithstanding that the violation has been committed by persons acting in an official capacity."
A. The parties' submissions
115. The Government contended that the applicants had had effective remedies at their disposal as required by Article 13 of the Convention and that the authorities had not prevented them from using them. The applicants had had an opportunity to challenge the acts or omissions of the investigating authorities in court and could also claim damages in civil proceedings. In sum, the Government submitted that there had been no violation of Article 13.
116. The applicants reiterated the complaint.
B. The Court's assessment
1. Admissibility
117. The Court notes that this complaint is not manifestly ill-founded within the meaning of Article 35 § 3 of the Convention. It further notes that it is not inadmissible on any other grounds. It must therefore be declared admissible.
2. Merits
118. The Court reiterates that in circumstances where, as here, a criminal investigation into the disappearance has been ineffective and the effectiveness of any other remedy that might have existed, including civil remedies suggested by the Government, has consequently been undermined, the State has failed in its obligation under Article 13 of the Convention (see Khashiyev and Akayeva, cited above, § 183).
119. Consequently, there has been a violation of Article 13 in conjunction with Article 2 of
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