 The Leyak is a similar being from Balinese folklore of Indonesia . A Kuntilanak or Matianak in Indonesia , or Pontianak or Langsuir in Malaysia , is a woman who died during childbirth and became undead , seeking revenge and terrorizing villages . She appeared as an attractive woman with long black hair that covered a hole in the back of her neck , with which she sucked the blood of children . Filling the hole with her hair would drive her off . Corpses had their mouths filled with glass beads , eggs under each armpit , and needles in their palms to prevent them from becoming langsuir . This description would also fit the Sundel Bolongs . 
