A group of people barged into the house of Kaushalya Sardar and slit her throat in her sleep last night, the police said.
Sardar was killed for allegedly practising witchcraft, sources said.
The victim was branded witch since her husband died ten years after marriage. Prior to her husband's death, Sardar's brother-in-law and his wife also died of some diseases.
Sardar was living alone when the incident occurred last night.
