Police said the incident took place around 2:30am on Sunday at Barmashil Kheya Ghat area.
He was stabbed indiscriminately and left him for dead. Locals rescued him and took him to Khulna medical College Hospital. From there, he was sent to Dhaka for better treatment as his condition deteriorated.
He succumbed to his injures in the morning due to excessive bleeding, police said.
Dighalia Police Station’s Officer-in-Charge Md Ahsan Ullah said they are trying to identify and arrest the attackers.