Two days after the burglary of Tk 16.4 crore from the main branch of Sonali Bank in Kishoreganj, Rab personnel arrested its mastermind at Shyampur area in the capital this afternoon.
A team of Rab-10 arrested Sohel, the key person behind the burglary that was committed digging a tunnel between an adjacent residential building and the vault of the bank, confirmed Habibur Rahman, director of Rab Media Wing.
Two bank officials discovered the heist Sunday afternoon when they entered the second cell of the bank's vault to get money for transactions.
The tunnel was dug to the vault from a nearby building only 20 yards away from the bank on Isa Khan Road at Rathkhola.
A narrow alley separates the bank and the building.
The tin-roofed house may have been rented solely for the burglary purpose.
The two-room house was given to one Sohel two years ago, but it bore no vestiges of daily living.
Instead, it was filled with earth removed to make the underground passage.
A total of 16 people including, the manager of a Sonali Bank branch in Kishoreganj where a robbery took place Saturday, were quizzed Monday while the owner of the house was detained by police for interrogation as well.