One of the accused in the attack appears before a court in the capital, Moscow, on Tuesday (Reuters)

The Russian Commissioner for Human Rights criticized the use of torture against security detainees in a bloody attack in Moscow on Friday evening, and said it was "unacceptable," according to what the Russian TASS news agency reported on Tuesday.

The Russian Commissioner's statements came after the publication of video clips showing the interrogation of suspects in the attack that targeted a concert hall in Crocus near Moscow, which killed at least 139 people. The Islamic State claimed responsibility for the attack.

Part of the ear of one of the suspected militants was cut off during his interrogation, and the four main defendants showed clear injuries when they appeared before a court in Moscow last Sunday.

The Kremlin refused to comment - yesterday, Monday - when asked whether the defendants had been subjected to torture.

“Despite the fact that the detention of criminals may be extremely important, and that the text of the Criminal Code does not hold responsible for actions causing harm during detention, it is absolutely unacceptable to use torture against detainees and accused,” TASS quoted Commissioner Tatiana Moskalkova as saying.

Moskalkova added that any procedural and executive measures must be conducted in accordance with the law.

The Russian Constitution prohibits torture, and Russia is a signatory to the United Nations Convention against Torture.

Source: Reuters