The deceased was identified as Md Sohel, 22, a local fisherman and son of Md Swapan.
Officer-in-Charge of Sadar Police Station Azizur Rahman said Sohel had an argument over a trivial matter with some local miscreants at a wedding ceremony.
Later, the miscreants attacked him while he was returning home from the function on Monday night, leaving him severely injured.
Sohel was taken to the Sadar Hospital. He succumbed to his injuries on Tuesday evening while being taken to Dhaka.
Sadar Police Station's Officer-in-Charge Azizur Rahman said they are investigating the incident.
Also read: Youth beaten to death in Dohar