Moscow Regional Court sentenced four members of the group that Russian media nicknamed the "GTA gang" to life imprisonment for killing their victims in carefully planned attacks, TASS state news agency reported.
The court found that the men were specially trained to carry out the attacks and observed a strict hierarchy within the gang.
Four other gang members who had been on trial were killed by security forces last year as they made a violent attempt to escape during a previous court hearing.
The handcuffed prisoners seized their guards' guns as they were being escorted in a lift and tried to flee but were captured by Russia's National Guard after a shootout.
Russian television showed images of special forces guarding the court today.
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