Four members of a family were found dead in their house at Jamdol village under Bheden block in Bargarh district on Sunday evening.
The deceased included an old couple and their son and daughter. The neighbours informed police after they found foul smell being emitted out of the house, which was closed for the last two days.
A police team which arrived at the spot found the door of the closed from inside. But it was yet to be ascertained whether it was a case of suicide or murder.
However, the neighbours said the family was peace-loving and they don’t know them of having any enmity with anyone.
Police said the house would be opened on Monday in the presence of a magistrate and the bodies would be sent for postmortem.