Reports say Medi Mandal had married off his daughter, Soni Kumari to Yogendra Singh of Itawa district in neighbouring Uttar Pradesh, two months ago.
After they were married the man started visiting his in-laws home during which he fell in love with his mother-in-law Ruby Devi, and he eventually eloped with her.
The devastated Mandal went to the police and requested them to help get back his wife.
Local police said they are investigating the case and hope to find the lady soon. The eloped woman is a mother of 3.