Industrial rock band Skinny Puppy has sent an invoice to the US military for $666,000 after it was alleged to have used its music at Guantanamo Bay, according to US media.

The band's keyboardist Cevin Key said they planned to design an album cover based on an invoice for the US government.

We sent them an invoice for our musical services considering they had gone ahead and used our music without our knowledge and used it as an actual weapon against somebody. I wouldn’t want to be subjected to any overly loud music for six to 12 hours at a time without a break. Keyboardist Cevin Key, speaking to CTV News

But after they found out that the American government had allegedly used their music without permission, Key said the band was told it could bring a suit against the Department of Defense, and sent the invoice, he told CTV News in a phone call.