The accused, identified as Jogeshwar Lodhi, raped his widowed daughter-in-law (22) last evening in Garoli village under Jatara police station limits of the district, when she was in the house along with her one-year-old daughter, Jatara's Sub Divisional Officer of Police (SDOP) N K Parihar told reporters.
When the victim threatened to report the matter to police, the accused killed her by hitting on her head with a stone, he said.
The victim's husband had allegedly committed suicide by consuming some poisonous substance about three months back, he said.
After the offence, the accused fled from the village.
However, he surrendered before police today and admitted that he committed the crime, Parihar said.
Police have registered a case in this regard.