a suspicious activity report (sar) should be filed
In the United States, FinCEN requires that an SAR be filed by a financial institution when the financial institution suspects insider abuse by an employee; violations of law aggregating over $5,000 where a subject can be identified; violations of law aggregating over $25,000 regardless of a potential subject; transactions aggregating $5,000 or more that involve potential money laundering or violations of the Bank Secrecy Act; computer intrusion; or when a financial institution knows that a customer is operating as an unlicensed money services business.