[1] A polong is created from the blood of a murdered man kept in a type of spherical bottle with a narrow neck.
As per some sources, people who have been attacked by polong are left with bruises, a few markings and almost always have blood coming out of their mouths.
[2] Unless called off by its owner, a polong victim can only be cured through exorcism by a shaman (dukun or bomoh).
The polong replies through the possessed person in a falsetto voice, revealing the name and village of its owner.
The polong will often resist, either by making the afflicted victim attack the shaman, or by falsely accusing someone else.