Police said a man hacked four women, including two members from his family to death and committed suicide afterwards in Moulvibazar's Baralekha upazila early Sunday.
The deceased are murderer Nirmal's wife Jolly, 26, mother-in-law Lakshmi, 43, neighbour Bashanto, 37, and Bashanto's daughter Shiuli, 6.
"The incident happened in a remote tea estate in Shahbazpur union of the upazila over a family dispute," said Faruk Ahnad, superintendent of police.
"According to neighbours, Nirmal repeatedly stabbed his wife at 5am after over family dispute while others went there to stop him, he stabbed them to death too," he said.
"Nirmal also committed suicide after the killing the women," he added.
On information, police went to the spot and recovered the bodies. All the five bodies have been sent for autopsy, Faruk Ahnad added.