Key paragraph(s) can be found below the document.
Paragraph 83: “On this latter point the Court has explained that where the events in issue lie wholly, or in large part, within the exclusive knowledge of the authorities, as in the case of persons within their control in custody, strong presumptions of fact will arise in respect of injuries occurring during such detention. The burden of proof is then on the Government to provide a satisfactory and convincing explanation by producing evidence establishing facts which cast doubt on the account of events given by the victim (see Salman, cited above, § 100; Rivas v. France, no. 59584/00, § 38, 1 April 2004; and also, among other authorities, Turan Çakır v. Belgium, no. 44256/06, § 54, 10 March 2009; Mete and Others v. Turkey, no. 294/08, § 112, 4 October 2012; Gäfgen, cited above, § 92; and El-Masri, cited above, § 152). In the absence of such explanation, the Court can draw inferences which may be unfavourable for the Government (see, among other authorities, El-Masri, cited above, § 152). That is justified by the fact that persons in custody are in a vulnerable position and the authorities are under a duty to protect them (see, among other authorities, Salman, cited above, § 99).”
Paragraph 88: “in respect of a person who is deprived of his liberty, or, more generally, is confronted with law-enforcement officers, any recourse to physical force which has not been made strictly necessary by his own conduct diminishes human dignity and is, in principle, an infringement of the right set forth in Article 3”
Paragraph 90: “there is a particularly strong link between the concepts of “degrading” treatment or punishment within the meaning of Article 3 of the Convention and respect for “dignity”.”