Story highlights
- Nurul Islam Marzan was killed in a shootout with police, authorities say
- Other organizers were killed in August and October, police say
"Marzan was the operational commander and a mastermind behind the Holey Artisan Bakery attack," said Hoque.
Dhaka police spokesman Masudur Rahman said that four policemen were shot during the encounter. Pistols and explosives were recovered from the scene, he said.
Two other main organizers behind the attack have already been killed.
Police say both were leaders of Jamayetul Mujahideen Bangladesh (JMB), a local terror group that authorities allege was responsible for the attack, though ISIS also claimed responsibility.
Though Bangladesh has dealt with terror attacks in the past, with secular bloggers, Hindu priests and others murdered in cold blood, the July 1 attack was of a much larger scale.