With the death of Ayub Ali, 70, on Friday evening at the Enam Medical College and Hospital’s ICU, the toll in the incident has risen to nine.
A group of 8-10 robbers had attacked the Bangladesh Commerce Bank Ltd’s Ashulia branch with firearms, bombs and sharp weapons.
Six people including bank officials, customers and bystanders were killed during the robbery. A number of others were injured by gunshots and bomb blasts.
The locals fought back and caught two of the robbers when they fell with their motorcycle while fleeing the scene.
They lynched one of them and handed the other, Saiful Islam, over to police after a beating.
At a press briefing on Friday, police said they suspected the arrestees were operatives of banned Islamist outfit Jamaa'tul Mujahideen Bangladesh.