Another mastermind of Gulshan café attack was identified and he is a close aide of Bangladeshi origin Canadian citizen Tamim Chowdhury, police claimed today.

"The suspected mastermind is Marjan and he is a Bangladeshi national," said Monirul Islam, chief of Dhaka police’s specialised counter terrorism unit, during a press briefing at police headquarters.

All the photographs taken by the militants during the Holey Artisan attack were sent to Marjan, said the chief of counter terrorism unit.

On the July 1 Gulshan attack, Marjan was staying at Kalyanpur in the capital and continued communication with the attackers and other two masterminds, Monirul added.

Marjan took the Holey Artisan attackers to the Gulshan area and later he left the spot on July 1, Monirul added.

It is also suspected that two other suspected masterminds of the attack -- Tamim and sacked army Major Syed Mohamad Ziaul Haque are staying in Dhaka, Monirul further said.

The process of arresting them is underway, he said.

According to police, Tamim “masterminded” the Gulshan and Sholakia attacks, while sacked army official Ziaul had a hand in the targeted killings.

Recently, police announced Tk 20 lakh bounty on each of the duo.

On July 1, a group of terrorists stormed the Holey Artisan Bakery in Gulshan diplomatic zone in the capital, killing 22 people, mostly foreigners. Two police officials were also killed.

According to the SITE Intelligence Group, which monitors global terror activities, IS claimed responsibility for the attack. The government, however, says there is no IS presence in Bangladesh.

The next week, militants attacked a police checkpoint near the Sholakia Eid congregation in Kishoreganj, killing two police officials and a local.