In the absence of investigators, which entity should maintain custody of property and evidence at the scene?

• A. Bystander
• B. Fire and emergency services organizations
• C. Police department
• D. Building owner

Answer: (B)

Preserving evidence and controlling the scene when investigators aren’t on site is the responsibility of the fire department and other fire and emergency services organizations. They are the ones already in charge of scene safety and incident control, so they’re best positioned to establish a secure perimeter, limit access, and prevent contamination or tampering of any property or items that could serve as evidence.

The proper approach is to set up a clear chain of custody: designate a scene supervisor, log who enters the area, minimize handling of items, and tag, bag, and document each piece of evidence with time, description, and case information. This careful handling helps ensure that, when investigators arrive, the transition is seamless and the integrity of the evidence is maintained.

Bystanders should not be relied upon to preserve evidence because they may unintentionally contaminate or move items. Building owners generally do not have the authority to manage evidence security, and police departments usually take custody when investigators are present. In the absence of investigators, the fire service assumes custody to prevent loss or contamination until investigators can take over.