t over a period of several years the applicants' recollection of an extremely traumatic and stressful event differed in rather insignificant details does not in itself suffice to cast doubt on the overall veracity of their statements.
91. The Court observes that where the applicants make out a prima facie case and the Court is prevented from reaching factual conclusions owing to a lack of relevant documents, it is for the Government to argue conclusively why the documents in question cannot serve to corroborate the allegations made by the applicants, or to provide a satisfactory and convincing explanation of how the events in question occurred. The burden of proof is thus shifted to the Government and if they fail in their arguments, issues will arise under Article 2 and/or Article 3 (see {Togcu} v. Turkey, No. 27601/95, § 95, 31 May 2005, and Akkum and Others v. Turkey, No. 21894/93, § 211, ECHR 2005-II).
92. Taking into account the above elements, the Court is satisfied that the applicants have made a prima facie case that their relatives were arrested by State servicemen. The Government's statement that the investigators had not found any evidence to support the involvement of the federal forces in the kidnapping is insufficient to discharge them from the above-mentioned burden of proof. Having examined the documents submitted by the parties, and drawing inferences from the Government's failure to submit the remaining documents which were in their exclusive possession or to provide another plausible explanation for the events in question, the Court finds that Magomed-Ali Abayev and Anvar Shaipov were arrested on 13 September 2000 by State servicemen at the checkpoint located on Lenin Street in Urus-Martan.
93. There has been no reliable news of Magomed-Ali Abayev and Anvar Shaipov since the date of the kidnapping. Their names have not been found in any official detention facility records. Finally, the Government have not submitted any explanation as to what happened to them after their arrest.
94. Having regard to the previous cases concerning disappearances in Chechnya which have come before it (see, among others, Bazorkina, cited above; Imakayeva, cited above; Luluyev and Others v. Russia, No. 69480/01, ECHR 2006-VIII (extracts); Baysayeva v. Russia, No. 74237/01, 5 April 2007; Akhmadova and Sadulayeva, cited above; and Alikhadzhiyeva v. Russia, No. 68007/01, 5 July 2007), the Court finds that in the context of the conflict in the Republic, when a person is detained by unidentified servicemen without any subsequent acknowledgment of the detention, this can be regarded as life-threatening. The absence of Magomed-Ali Abayev and Anvar Shaipov or of any news of them for more than nine years supports this assumption.
95. Accordingly, the Court finds that the evidence available permits it to establish that Magomed-Ali Abayev and Anvar Shaipov must be presumed dead following their unacknowledged detention by State servicemen.
III. Alleged violation of Article 2 of the Convention
96. The applicants complained under Article 2 of the Convention that their relatives had been deprived of their lives by Russian servicemen and that the domestic authorities had failed to carry out an effective investigation of the matter. Article 2 reads:
"1. Everyone's right to life shall be protected by law. No one shall be deprived of his life intentionally save in the execution of a sentence of a court following his conviction of a crime for which this penalty is provided by law.
2. Deprivation of life shall not be regarded as inflicted in contravention of this article when it results from the use of force which is no more than absolutely necessary:
(a) in defence of any person from unlawful violence;
(b) in order to effect a lawful arrest or to prevent the escape of a person lawfully detained;
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