Jaipur:
A 60-year-old woman and her three grandchildren, aged between 8 and 13, were found murdered in their house in a village on the city's outskirts on Monday, police said.
Police said the woman, Shravani Devi, appeared to have struggled with the unidentified assailants but the children -- Ramjilal, 13, Keshanta, 10 and Kavita, 8, -- were killed in their sleep.
The motive behind the brutal murders was yet unknown, said the police.
The bodies with slit throats were found in Mahadevpura area of Chaksu in Jaipur district and police said some sharp-edged weapons were used to kill them.
"During preliminary investigation, it has come up that there must be more than one person who killed the victims. While the elderly woman tried to struggle with the assailants, the children were killed in their sleep," said additional deputy commissioner of police Karan Sharma.
The children's father works at a brick manufacturing unit and was not present in the house when the incident took place, the officer said.