This is the best summary I could come up with:

By the time the men accused of murdering 137 people at a concert on Friday night appeared in court in Moscow on Sunday, their faces were swollen and disfigured, their eyes vacant.

The photograph was published by a Telegram channel connected to the Wagner paramilitary group and suggested Fariduni had been shocked with 80 volts and water had been poured over his body to “intensify the effect”.

There is little to no sympathy in Russia for the gunmen who stormed the Crocus City Hall on Friday night and carried out the worst terrorist attack on Russian soil since the Beslan school siege of 2004.

In 2017, after an IS bombing of a St Petersburg Metro station, Human Rights Watch found that one suspect during his detention was threatened with rape with a stick; two were given electric shocks to their genitals.

The Russian defence ministry on Monday released footage of an awards ceremony showing several members of an elite border unit who caught the gunmen and might have taken part in their brutal treatment.

The officer who cut off Rachabalizoda’s ear had military patches including a far-right Totenkopf (dead person’s head) previously worn by Nazi SS units.

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