This is all made clear in the case - it is one of the reasons the plaintiffs failed in the Supreme Court
Quotes from the ECHR decision up thread
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Quotes from the ECHR decision up thread
Consequently, given that the decision to close the investigation without further action is not a judicial decision in the strict sense and that it is not final, it would be even less justified to invoke the principle of the presumption of innocence to restrict freedom of expression.
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And let it not be said that the appellants were exonerated ( inocentados ) by the decision to close the criminal investigation without further action.
In this case, it is not because the public prosecutor's office was convinced that the appellants had not committed a criminal offense that this decision was rendered (see article 277 § 1 of the CCP).
This dismissal, in this case, was decided because the prosecution had not obtained sufficient evidence to show that the appellants had committed a criminal offense (see Article 277 § 2 of the CCP).
There is therefore a significant difference, and not simply a semantic one, between the legally admissible grounds for a decision to classify without follow-up.