A schoolboy was stabbed to death allegedly by a shop worker in Agrabad Shishu Park area of the port city on Friday night.
The deceased was identified as Imtiaz Hasan Mahin, 14, son of Md Ilias and class-VIII student of Agrabad Kolokakoli High School.
Soyedul Alam, a Sub-Inspector at Double Mooring Police Station, said Mahin along with his friends were sitting near a department store in the evening.
At one stage, he locked into an altercation with a staff of the shop, Shahed (15) around 8pm over a trifling matter, the SI said.
Later, Shahed stabbed Mahin indiscriminately, leaving him critically injured, UNB reported citing the official.
Mahin was taken to Chittagong Medical College Hospital where he succumbed to his injuries.