The arrestees are Md Akash, one of the masterminds, Milon, and Ridoy. They were arrested from different areas of Dhaka, Netrokona and Khulna districts.
At one stage, the magistrate asked the IO where he kept the rest of the Tk 6.43 crore that was recovered, according to media reports. The IO failed to give the answer.
The robbery took place in Turag area around 7:15am on Thursday when officials of Money Plant Link Private Ltd, the firm hired for transporting the money to DBBL ATMs, were heading towards Savar EPZ in a microbus from Mirpur DOHS, with Tk 11.25 crore in four trunks.