The police suspect that a woman whose body was found a few km away could be their mother.
The bodies of four children, aged between four and 15 years, were found in a house on the outskirts of Meerut in Uttar Pradesh on Monday.
The police say the children's throats had been slit.
The children, believed to be siblings, reportedly shifted to this house in the city's Samar Garden with their family just three days ago. The police say that their father is in jail.
They suspect that a woman whose body was found a few km away could be their mother.
The woman, believed to be 40, was found dead in a forest area. Her body was found with that of a man. The police say the two may have been in a relationship.