Vikram Kol and 35-year-old Puja Kol had married three years ago and lived in a rented room near the carpet factory where they worked at Raghunathpura, Circle Officer S S Rai said.
On Saturday night, Vikram strangled Puja to death, threw acid on her body and escaped after locking the house, he said.
Radha Devi, owner of the house, informed police today after a foul smell started emanating from the room, Rai said, adding that documents related to their court marriage and pictures were recovered from the room.