Villagers found Geeta -- who got married to Sonu Thakur in February this year -- hanging from the ceiling at her in-laws' house in Nawka tola village on July 7, they said.
After the villagers left, the in-laws tried to burn the body but later buried it in haste and are on the run, police said.
On the complaint of Geeta's father Harishanker, police lodged an FIR against four persons, including her husband yesterday, police said.
The victim's body was recovered from a pit in the village, they said.