A kind of bottled-imp, created by keeping the blood of a murder victim in a bottle and saying certain incantations over it for seven or fourteen days. The owner, who is treated as the polong's parent, must feed the spirit daily with blood from their neck. A person who has been afflicted by the polong will cry out and wildly strike at people nearby, all the while blind and deaf to their surroundings, and unconscious of what they are doing. In such cases, a bomoh would be called in to question the polong and find out who is its parent and where they are located. If the polong lies or conceals the identity of its owner, the victim will die after one or two days.