Scores of bare-chested skinheads have attacked a crowd of about 3000 people at a rock concert in central Russia, beating them with clubs, media reports say.
Dozens of people were left bloodied and dazed in Sunday's attack, television and news agencies reported, and state news channel Rossiya-24 said a 14-year-old girl was killed at the concert in Miass, 1400km east of Moscow.
Fourteen ambulances were called to the scene, the channel said, citing witness accounts. The motive for the attack was not known, and authorities couldn't be reached for comment. The ITAR-Tass agency said local police had refused comment.
Many of Russia's top rock acts were attending the Tornado rock festival, the agency said.
Attacks on dark-skinned foreigners in Moscow and St Petersburg by Russia's neo-Nazi skinhead movement have been relatively common in recent years. The January 2009 murder of lawyer Stanislav Markelov and journalist Anastasiya Baburova prompted a Kremlin crackdown on ultra-nationalists, who were blamed for the killings.
In April, a Moscow court banned the far-right Slavic Union, whose Russian acronym SS intentionally mimicked that used by the Nazis' infamous paramilitary. The group was declared extremist and shut down. At the time the group's leader, Dmitry Demushkin, told The Associated Press it tried to promote its far-right agenda legally and warned that the ban would enrage and embolden Russia's most radical ultra-nationalists.
Russia's ultra-nationalist movement is so deeply embedded in the country's culture that militant groups have sprouted up around Russia to fight it. Anti-racist groups regularly spearhead attacks on ultra-nationalists, sparking revenge assaults in an intensifying clash of ideologies.
Neo-Nazi and other ultra-nationalist groups mushroomed in Russia after the 1991 Soviet collapse. The influx of immigrant workers and two wars with Chechen separatists triggered xenophobia and a surge in hate crimes.
Racially motivated attacks, often targeting people from Caucasus and Central Asia, peaked in 2008, when 110 were killed and 487 wounded, an independent watchdog, Sova, said. The Moscow Bureau for Human Rights estimates that about 70,000 neo-Nazis are active in Russia - compared with a just few thousand in the early 1990s.