Industrial band Skinny Puppy has invoiced the US government for $666,000 after it was revealed their music was used to torture detainees in Guantanamo Bay.
The group, from Vancouver in Canada, claims that the US Department of Defense used the music illegally.
Keyboardist Cevin Key told CTV News that they were contacted by a fan who worked as a guard at the US Naval base.
“I think he was coming at it from the fact that he was shocked that our music was being used because although he was a guard at Guantanamo Bay, he also happened to be a fan of our music,” he said.
Rock bands have long associated themselves with the number of the beast, 666, so it's hard to tell if the amount they've chosen is serious.
Bands such as the Red Hot Chili Peppers are also aware that their music is used in the detention centre.