All men four accused of the attack appeared to have been beaten and one was brought to court in a wheelchair.
Russia has charged four men it says attacked a Moscow concert hall and killed at least 137 people.
All four appeared to have been beaten and one was brought to court in a wheelchair.
They were charged with committing an act of terrorism.
The Islamic State group said it carried out Friday's outrage at Crocus City Hall and posted video evidence.
Russian officials have claimed, without evidence, Ukrainian involvement.
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