The accident occurred soon after the train left the Dulhazara station in Chakaria Upazila
The murder was reported from Poshchim Baniari village of Nazirpur Upazila early on Thursday.
Police said assailants broke in the house of 42-year-old Shomiron Bepari.
“They hacked him and his wife Shwapna. Locals rushed them to a Khulna hospital. Shomiron died on the way,” said Nazirpur police OC Md Habibur Rahman.
“We suspect that the attack was led following a land dispute. One Montu Mia has been held from the village,” he said.