Assistant police inspector V L Kadam of Bhiwandi police said that Fatima Tarbez Shaikh (23), the victim, married Tarbez Sharif Shaikh in 2011.
It was a love marriage. However, after some days, her in-laws started harassing her with demand of Rs one lakh in dowry as a capital for her husband's electric goods shop.
Fatima hanged herself in the house on December 11.
Police have registered a case against Tarbez, his parents Sharif and Rashia Shaikh, brothers-in-law Kais, Altamas and sister-in-law Neha Shaikh.
No arrest has been made yet.