Who can conduct internal investigations?

• A. Supervisors
• B. Supervisors & PSB
• C. External auditors
• D. Union representatives

Answer: (B)

Internal investigations in a law enforcement or detention setting are typically conducted by a combination of frontline supervisors and the agency’s Professional Standards Bureau (or equivalent internal standards/IA unit). Supervisors handle immediate inquiries, gather statements, preserve evidence, and make initial determinations within their unit. The Professional Standards Bureau provides a more formal, impartial review with standardized procedures, ensuring due process and objectivity in more serious or complex cases. Together, they balance timely oversight with an independent, thorough investigation.

This is why the option combining supervisors and PSB is the best answer: it reflects the dual approach agencies use to keep investigations fair, comprehensive, and properly governed. External auditors aren’t typically involved in internal staff conduct issues, and union representatives generally do not have investigative authority; they may assist or represent members in disciplinary matters, but not lead internal investigations.