How are fire-cause determination and a criminal arson investigation related?

• A. They Are Conducted Simultaneously Regardless of Findings
• B. The Fire-Cause Determination Must Point to Arson Before the Criminal Investigation Can Begin
• C. Both Are Independent Processes
• D. Arson Investigation Can Begin Without a Fire-Cause Determination

Answer: (B)

The process hinges on establishing whether the fire was intentionally set. A fire-cause determination identifies if the ignition was accidental, natural, or incendiary. Only when the fire investigation finds evidence pointing to arson does law enforcement have a valid basis to start a criminal arson investigation. Without that finding, pursuing criminal charges isn’t supported by the evidence collected at the scene. In practice, fire investigators and investigators from police or fire marshal units work together, with the fire person determining cause and the criminal side building the case on that finding if arson is indicated. If the cause is ruled accidental or remains undetermined, a criminal arson investigation typically would not begin.