Couldn't find it in English, but...
A bunch of Russian Satanist cannibals stabbed 4 other Russian youths (1 boy and 3 girls) 666 times each before eating various limbs and body parts. 8 men with connections to the Russian Satanist community are currently held by the police. The 4 youths also had connections with the growing Satanist community in Jaroslavl. 4 of the men held in custody are also under investigation of exhuming a dead woman from a cemetary. They're also known to have eaten a cat.