Rock legends Metallica have requested that their music not be used when interrogating prisoners according to the US Navy SEAL that was responsible for killing Osama bin Laden two years ago.

The SEAL, who has remained anonymous for his protection spoke to magazine Esquire saying: "When we first started the war in Iraq, we were using Metallica music to soften people up before we interrogated them...

"Metallica got wind of this and they said, 'Hey, please don't use our music because we don't want to promote violence.' I thought, 'Dude, you have an album called Kill 'Em All'."

He revealed that because of albums such as “Kill ‘Em All”, he was rather confused as to the band’s anti-violence stance.

He did go on to reveal that even though US troops were left unable to use Metallica’s music during interrogation, a Christian metal band called Demon Hunter got in touch as they were more than happy for their music to be used instead.

He continued: "Then a band called Demon Hunter got in touch and said, 'We're all about promoting what you do.' They sent us CDs and patches. I wore my Demon Hunter patch on every mission. I wore it when I blasted bin Laden."

Metallica’s front man James Hetfield has previously spoken out about his feelings over the use of the band’s music to break down prisoners in Guantanamo Bay.

He said: "Part of me is proud because they chose Metallica and then part of me is kind of bummed about it that people worry about us being attached to some political statement because of that.

"We've got nothing to do with this and we're trying to be as apolitical as possible, 'cause I think politics and music, at least for us, don't mix."