Hi, i find this story hard to believe to be honest with you.
Although i do know that human sacrifice does still take place. Mainly in Africa but some imagrants have exported the practice to other countrys. Not to many years ago a torso was found in the river thames in London. The body of a boy who had been sacrificed by witch doctors and his variouse body parts use in medicines and potions.
The picture you paint however sounds like your classic Hollywood depiction of what people think satanists get up to. Cutting the heart out of the body and holding it up as a gift to satan himself. I dont think so.
Nice little story though.