the Government's failure to submit the documents which were in their exclusive possession or to provide a plausible explanation of the events in question, the Court finds it established that Mr Abu Aliyev was abducted on 29 October 2002 from his home in Grozny by State servicemen during an unacknowledged security operation.
61. The Court further notes that there has been no reliable news of Mr Abu Aliyev since October 2002. His name has not been found in the official records of any detention facilities. Finally, the Government have not submitted any explanation as to what happened to him after his abduction.
62. Having regard to the previous cases concerning disappearances of people in Chechnya which have come before the Court (see, for example, Imakayeva, cited above, and Luluyev and Others v. Russia, No. 69480/01, ECHR 2006-... (extracts)), the Court considers that, in the context of the conflict in the Chechen Republic, when a person is detained by unidentified servicemen without any subsequent acknowledgement of the detention, this can be regarded as life-threatening. The absence of Mr Abu Aliyev or any news of him for over seven years corroborates this assumption. Furthermore, the Government have failed to provide any explanation of his disappearance and the official investigation into his abduction, which has gone on for over seven years, has produced no tangible results.
63. Accordingly, the Court finds that the evidence available permits it to establish to the requisite standard of proof that Mr Abu Aliyev was abducted on 29 October 2002 by State servicemen and that he must be presumed dead following his unacknowledged detention.
iii. The State's compliance with Article 2
64. Article 2, which safeguards the right to life and sets out the circumstances when deprivation of life may be justified, ranks as one of the most fundamental provisions in the Convention, to which no derogation is permitted. In the light of the importance of the protection afforded by Article 2, the Court must subject deprivation of life to the most careful scrutiny, taking into consideration not only the actions of State agents but also all the surrounding circumstances (see, among other authorities, McCann and Others v. the United Kingdom, judgment of 27 September 1995, Series A No. 324, pp. 45 - 46, §§ 146 - 147, and {Avsar} v. Turkey, No. 25657/94, § 391, ECHR 2001-VII (extracts)).
65. The Court has already found it established that the applicant's husband must be presumed dead following unacknowledged detention by State servicemen. Noting that the authorities do not rely on any ground of justification in respect of any use of lethal force by their agents, it follows that liability for his presumed death is attributable to the respondent Government.
66. Accordingly, the Court finds that there has been a violation of Article 2 in respect of Mr Abu Aliyev.
(b) The alleged inadequacy of the investigation of the kidnapping
67. The Court reiterates that the obligation to protect the right to life under Article 2 of the Convention, read in conjunction with the State's general duty under Article 1 of the Convention to "secure to everyone within [its] jurisdiction the rights and freedoms defined in [the] Convention", also requires by implication that there should be some form of effective official investigation when individuals have been killed as a result of the use of force (see, mutatis mutandis, McCann and Others, cited above, § 161, and Kaya v. Turkey, judgment of 19 February 1998, § 86, Reports 1998-I). The essential purpose of such an investigation is to secure the effective implementation of the domestic laws which protect the right to life and, in those cases involving State agents or bodies, to ensure their accountability for deaths occurring under their responsibility. This investigation should be independent, accessible to the vict
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