The stabbed bodies of an elderly couple has been found at their house in the district's Durgapur upazila.
The deceased are Arun Saha, 75, a cloth store owner and his wife Hena Rani Saha, 65.
Durgapur police station OC Rezaul Islam said: "Neighbours of the couple found their door closed from Friday morning and did not get any response from inside till afternoon. Later, they informed the police.
"Police then appeared at the spot around 3:30pm, broke opened the doors of the house and found the stabbed bodies of the couple."
The couple used to live in their house alone as their two sons lives in Dhaka, the OC added.
The reason behind the murder could not be known yet.