I'm betting that it wasn't. It was a muslim ritual beheading, for anti-muslim blasphemy.
That said, islam (note the small "i", a sign of my disrespect) is not a religion, in any sense of the word. Rather, it is a political system of total control over every aspect of its mindless, robotic adherents' lives. islam encourages and breeds hatred, terrorism and murder. I know of no other modern religion which does that. islam is all about women-chattelling, boy-buggering, ritual killing, beheading, infidel-killing, rape, lying, female mutilation, martyrdom, poverty and complete submission or death.
I'm talking flyin-flyout the same day Muslim terrorism. They are copying the mafia.