The customer's wire transfers to high-risk jurisdictions and the large volume of activity with low month-end balance are two facts that should be considered during the course of an investigation into possible money laundering. These facts may indicate that the customer is trying to move funds from or to countries that have weak anti-money laundering (AML) controls, or that are known to be a source or destination of illicit funds12. They may also suggest that the customer is using a technique called "smurfing" or "structuring", which involves breaking down large amounts of cash into smaller transactions to avoid detection or reporting34. The other two facts are not necessarily indicative of money laundering, as the customer may have a legitimate reason to have a long-standing account at the bank or to be on the exempt list for currency transaction reporting requirements.
References: 1: FFIEC BSA/AML Examination Manual, Appendix F: Money Laundering and Terrorist Financing Red Flags, Geographic Concerns, 5; 2: AML Red Flags - What are the Top 10 Indicators?, ComplyAdvantage, 6; 3: FFIEC BSA/AML Examination Manual, Appendix F: Money Laundering and Terrorist Financing Red Flags, Transaction Has Unusual Features, 5; 4: Money Laundering Red Flags | Key Behaviours and Indicators, High Speed Training, 7.