DSP Ajay Kumar said the body of the victim, Jitendra Ram, a driver by profession, was found inside a bag today.
Ram who had a daughter from his first wife fell in love with another woman Malti Devi, who belonged to other caste, few months ago.
A panchayat was convened to settle the issue and an inter-caste marriage was arranged, he said.
Despite his second marriage, Ram used to visit his first wife regularly and frequency of his visit increased in the recent past, the DSP said.
A case has been registered on the statement of the victim's father Naresh Mochi, he said.
The family members of Ram's second wife were absconding.