A 70-year-old man was beaten to death allegedly by his neighbour over the cutting of a tree in Sadar upazila of Kurigram on Wednesday night.
On the other hand, the victim’s elder sister also died after witnessing the attack.
The deceased was identified as Abul Kalam Azad, while her elder sister Sakina Begum was 75. They were residents of Raipur village under Kathalbari union of the upazila.
Locals and police said that Abul had an altercation with his neighbour Dulal Mia over cutting branches of a mango tree adjacent to their house on Wednesday afternoon.
Armed with sharp weapons and sticks, Dulal attacked Abul in his house around 9pm, leaving him critically injured, they said.
He was rushed to Kurigram General Hospital, where doctors declared him dead on arrival.
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Md Shahriar, officer-in-charge of Kurigram Sadar police station, said Sakina suddenly collapsed after witnessing the attack carried out on her brother by the neighbour.
Later, she was rushed to the hospital where doctors also pronounced her dead, the OC said.
Four people have been detained in this connection, he said.