A young man was stabbed to death allegedly by his friend in Halishahar area of the city on Thursday afternoon.
Police arrested the alleged killer, Md Saddam, after the incident.
Agitated Saddam stabbed his friend Irfan around 3pm as he slapped him four days ago over an altercation between them, said SM Obaidur Rahman, officer-in-charge of Halishahar Police Station.
Irfan died on the way to Chittagong Medical College Hospital, he said, adding that they arrested Saddam with the help of locals.