According to the ECtHR press release:

"The Court held, by a majority, that there would be a violation of Article 3 (prohibition of torture and inhuman or degrading treatment) of the Convention if the decision to deport the applicant to the Russian Federation were to be implemented.

The case concerned an order to deport the applicant, a Russian national of Chechen origin whose refugee status had been revoked under Article L. 711-4 of the Immigration and Asylum Code, to Russia. The applicant had argued before the Court that his deportation would expose him to risks because the prefecture had provided the consulate of the Russian Federation with details on his personal situation along with the request for readmission. In view of the serious and established facts which allowed it to determine the existence of a real risk of treatment in breach of Article 3 of the Convention, the Court found that the decision to deport the applicant to the Russian Federation would entail a violation of Article 3 of the Convention if it were to be enforced."