The deceased was identified as Md Alauddin Mollah, 38, an agent of Dutch-Bangla Bank Ltd mobile banking.
Elder son of Md Mojibul Haque Mollah of Charfoizuddin village under Nazirhat union, Alauddin was also a fertiliser and insecticide trader.
Forkan Ali, officer-in-charge of Manpura Police Station, said a group of miscreants swooped on Alauddin around 11:45pm as soon as he reached his courtyard from his shop.
The attackers chopped him indiscriminately, leaving him injured.
The youth was taken to Manpura Health Complex where the on-duty doctor declared him dead.
Meanwhile, police detained Alauddin’s employee Dibakar Chandra for interrogation.