The fire officer that conducts a preliminary fire cause and suspects that a crime has been committed should:

• A. Physically restrain the suspect
• B. Immediately interrogate the suspect
• C. Quarantine the suspect
• D. Request a fire investigator

Answer: (D)

When a fire officer suspects that a crime has been committed during a preliminary fire cause investigation, the priority is to preserve the scene and involve the proper experts. The best step is to request a fire investigator. A fire investigator has the training to determine cause, collect and preserve evidence, and maintain the chain of custody, all while coordinating with law enforcement. This ensures the investigation stays objective and lawful, and that potential arson or other criminal activity is properly documented without compromising evidence or rights.

Physically restraining the suspect, immediately interrogating the suspect, or quarantining the suspect are not appropriate actions for a fire officer. Restraining someone is a law enforcement task and could create safety and legal issues. Immediate interrogation can contaminate evidence and violate due process. Quarantining a person is not a standard or appropriate action in this context. The fire officer should focus on scene preservation, documentation, and calling in the fire investigator to handle the investigative and legal steps.