Agra, Jan. 20 -- Four members of a family, including three women, were murdered in their house in Uttar Pradesh's Etah district on Monday, police said, adding that prima facie the victims were attacked with a heavy object on their head. The incident occurred in the Kotwali Nagar area of Etah and the deceased were identified as Ganga Singh, 75, his wife Shyama Devi, 68, their daughter-in-law Ratna Devi, 45, and granddaughter Jyoti, 23, police said. "The family owns a medical store in Etah. Four of the family members present in the house were killed. A police team and forensic experts are at the spot. CCTV footage are being gathered," deputy inspector general (DIG), Aligarh Range, Prabhakar Chaudhary said. Preliminary probe suggested that the attackers used a brick to assault the victims on the head, police said, adding that a bloodstained interlocking brick was recovered from the scene. The incident came to light around 2pm when Ratna Devi's son Devansh, 8, returned home from school and found the house unusually quiet. The boy raised an alarm upon discovering the bodies following which neighbours rushed to the house, police said. Shyama Devi was alive when police reached the spot and was taken to the Etah Medical College, where she succumbed to her injuries during treatment. Additional director general (ADG), Agra Zone, Anupam Kulshrestha said: "Police teams are being constituted under the supervision of DIG Aligarh Range for interrogating all possible suspects, but none has been taken in custody as yet." Jyoti's wedding was scheduled for February 10, police said. Her father, Kamal Singh, who runs the medical store, was not at home at the time of the incident. Preliminary inquiry found no signs of robbery. The family members said they were not aware of any enmity or disputes, and were clueless about the motive behind the killing, police said. All four bodies were sent for post-mortem and several people from the area were taken tothe Kotwali police station for questioning, police said, addinga case will be registered aftera complaint is filed by thefamily....