State media reports `` race-hate '' violence has erupted in St. Petersburg and St. Petersburg . Ilya Kubrakov and three other rioters were arrested on Friday , a Moscow court announced , according to the Russian state-run news agency RIA Novosti . About 5,000 the Spartak Moscow supporters clashed with police 28 . They were protesting alleged police negligence over the death of Viktor Biryukov , 28 . Sviridov was reportedly killed in a fight with migrants from Russia 's Russia region .
State media reports `` race-hate '' violence has erupted in St. Petersburg and St. Petersburg . About 5,000 the Spartak Moscow supporters clashed with police 28 . They were protesting alleged police negligence over the death of Viktor Biryukov , 28 . Sviridov was reportedly killed in a fight with migrants from Russia 's Russia region .