A couple was found dead at Satpai in the municipality area on Friday afternoon.
The deceased were identified as Mihir Kanti Biswas, 70 and Tuli Rani Nanda, 58.
Joydeb Chowdhury, superintendent of Netrokona police, said locals informed police after smelling bad odour from their house.
Police recovered the bodies breaking open door of the house around 1:00pm and sent those to Netrakona Modern Hospital for autopsy.
Police suspected that the couple might have been strangulated to death two/three days ago.
The couple had been leaving lonely in the house as their son lives in Dhaka, said the police official.