On 19 January, FinCEN and US regulatory agencies jointly issued a set of FAQ that seek to clarify the regulatory requirements related to SAR to assist such financial institutions with their compliance obligations, while enabling financial institutions to focus resources on activities that produce the greatest value to law enforcement agencies and other government users of Bank Secrecy Act (BSA) reporting.
https://www.fincen.gov/sites/default/files/2021-01/Joint%20SAR%20FAQs%20Final%20508.pdf
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