According to media reports, the dead have been identified as 49-year-old Jitendra Lad, his 44-year-old wife Daksha Lad, their two teenage daughters, Trisha Lad (19) and Nisha Lad (17).
The West Yorkshire Police have launched an investigation into their deaths.
The family was living on Blackberry Way, Clayton from last six years and they were last seen celebrating Diwali.
Their dead bodies have been sent for post-Mortem.
The Police said that the couple was working for Bradford Council.
Trisha was a second year student of Biochemistry in The University of Leeds and Nisha had completed her General Certificate of Secondary Education (GCSE).
Their mysterious deaths have left everyone from their neighbors to colleagues in shock,
The grieved friends and neighbours of the slain family members laid down flowers in front of their house.
As per The Guardian report, police said that they suspect that Jitendra Lad may have killed his wife and daughters before killing himself.
Meanwhile, the police has sealed off the area to carry out investigations.