The 45-year-old heavily inebriated Shubhkaran Punia attacked his son Rajesh (20) fatally in Hardayalpura village, police said.
Suicide incident will be confirmed only after the post mortem, Circle Officer Ramgarh Shekhawati, Ramchandra Moond, said.
He said the father-son duo was taken to Ramgarh government hospital where doctors declared them brought dead.
Police have registered a case against Shubhkaran, retired havaldar, on the complaint of his daughter.
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