The purpose of the Suspicious Activity Report (SAR) is to report known or suspected violations of law or suspicious activity observed by financial institutions subject to the regulations of the Bank Secrecy Act (BSA). In many instances, SARs have been instrumental in enabling law enforcement to initiate or supplement major money laundering or terrorist financing investigations and other criminal cases. Information provided in SAR forms also presents the Department of the Treasury's Financial Crimes Enforcement Network (FinCEN) with a method of identifying emerging trends and patterns associated with financial crimes. The information about those trends and patterns is vital to law enforcement agencies and provides valuable feedback to financial institutions.