For Laws and Regulations of Bangladesh Bank please go through the following link:

Bangladesh Bank Circular
https://www.bb.org.bd/aboutus/regulationguideline/lawsnacts.php
Banking Companies Act 1991
http://bdlaws.minlaw.gov.bd/bangla_pdf_part.php?id=751


Financial Institutions Act, 1993
http://www.bangladesh-bank.org/openpdf.php


Money Laundering Prevention Act, 2012
http://www.bangladesh-bank.org/openpdf.php