The CIC conducted a raid in the morning getting intelligence information about the existence of the locker, said a senior official of the Bank.
He said the locker would be unlocked following due procedures as per Bangladesh Bank (BB) guidelines.
The move comes as the NBR launched an inquiry into the allegations of tax evasion by deposed PM Hasina, who fled to India following a mass uprising.
The tax authority has frozen the bank accounts of Hasina as part of the investigation, the officials added.
