The tea plantation worker and his four children had been blamed for causing a disease which killed two other workers and made many unwell in Assam state.
About 200 villagers tried and sentenced the family in an unofficial court, then publicly beheaded them with machetes.
They then marched to a police station with the heads, chanting slogans denouncing witchcraft and black magic.
March 19, 2006
In the Sonitpur district of India: