The internal audit activity is responsible for conducting fraud investigations.

After a potential fraud instance is identified and a lead investigator is appointed, the most likely next step is to determine the competencies needed for the investigation team and assess whether any team members have a conflict of interest. This step ensures that the investigation is conducted by appropriately skilled and unbiased personnel, which is crucial for maintaining the integrity and effectiveness of the investigation process.

Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF), Practice Guide: Assessing Fraud Risks