Four members of a family, including a six-month-old girl, were killed and their bodies set ablaze by unidentified persons in this district of Rajasthan on Wednesday, police said. The assailants first slit the throats of the family members and then set their hut afire early in the morning in Cheria village of the Osian area, they said. Police rushed to the spot after villagers alerted them to the fire in the hut. Superintendent of Police (Jodhpur Rural) Dharmendra Singh Yadav said the preliminary investigation pointed to some family disputes. Those killed were identified as Poonaram (55), his wife Bhanwari (50), their daughter-in-law Dhapu (23) and her six-month-old daughter Manisha. Yadav said police teams have been formed to investigate the case.