Rather than being confrontational in interviews, constantly seek agreement from the accused. No matter what the accused has supposedly done, do not express shock, outrage, or condemnation. This posture is recommended because:

The goal is to remain in control while still appearing compassionate and understanding.

It limits the interviewer's liability to formal charges of harassment.

The evidence in the case may ultimately point elsewhere.

Only trained experts in a controlled environment should risk provoking a suspect.