According to the BSA/AML Manual1, a financial institution's board of directors and senior management are ultimately responsible for ensuring that the institution has a comprehensive and effective BSA/AML compliance program and oversight framework. This includes ensuring that the institution timely identifies, reports, and responds to suspicious activity involving its products, services, customers, or employees. Therefore, when an anti-money laundering specialist is concerned that several suspicious transaction reports will discuss potential illegal activity of bank employees, the immediate concern for the institution is to ensure no delay in informing the board of directors and senior management of the situation, as well as the actions taken or planned to address the risks and mitigate the potential harm. The board and senior management should be kept informed of the status and outcome of any internal or external investigations, as well as any regulatory or law enforcement inquiries or actions, related to the suspicious activity involving bank employees.
Reference:
BSA/AML Manual1
Suspicious Activity Reporting - Overview2
Suspicious Activity Report (SAR) Basics3
What's Suspicious? Here's How Banks Apply the Smell Test4