Circulating reports are starting to indicate that Polish Death Metal legends, Behemoth have been detained by Russian immigration officials. Nergal has posted on the band's Facebook page to explain some of what is going on. The text was translated by a fan:

"We've been stopped by the immigration services for 'wrong visas'. When I said that we will not move an inch from the club without someone from the polish embassy, they threatened to force us out. They took us in a bus, accompanied by 10 officers, to the building of Federal Migration Service. We tried to reach polish embassy in Jekaterinburg but no one is answering the phone. If possible - please copy this message and pass it everywhere you can. We may expect a multihour hearing. The concert is off for sure. The only thing we want is to get back to the hotel safely and then - to Poland. No matter how hard we try - we cannot pass it all. Regards. Nergal"

This has no doubt led to the band having to cancel tonight's show in Russia. Keep an eye on the band's Facebook and our Twitter as this story develops.