All appeared to have been beaten - videos of brutal interrogation sessions were apparently leaked by Russian security forces, and reports suggest at least one had suffered electric shocks.
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The men the court identified as Mirzoyev and Rachabalizoda had black eyes and the latter’s ear was heavily bandaged - reportedly from it being partially severed during his arrest.
Mirzoyev also appeared to have a torn plastic bag wrapped around his neck.
The face of the man identified as Fariduni was badly swollen, while the man named as Fayzov appeared to lose consciousness as he was brought into court in a wheelchair wearing a thin hospital gown.
He appeared to have an eye missing, according to the Reuters news agency.
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A court statement on the Telegram messaging service said Mirzoyev had “admitted his guilt in full”, while Rachabalizoda also “admitted guilt”.
Anyone will admit guilt if you do that to them. Is there any actual evidence that these men were the ones who attacked the concert hall?