What action is appropriate if accelerant presence is suspected but evidence is inconclusive?

• A. Ignore accelerant hypothesis.
• B. Collect samples for laboratory analysis.
• C. Conclude accelerant presence.
• D. Request a second opinion from a different agency.

Answer: (B)

When there’s a suspicion of an accelerant but the evidence at the scene isn’t clear, the appropriate action is to collect samples for laboratory analysis. Field indicators can be misleading or dissipate over time, and accelerant residues may be present only in trace amounts or mixed with debris, making a definitive determination risky if based on sight or odor alone. By securing and preserving samples from the scene—such as debris from the burn area, residues on containers, and any suspected accelerant sources—and maintaining proper chain of custody, you provide the lab with material that can be analyzed with sensitive methods (like GC-MS or similar techniques) to confirm or rule out accelerants. This approach yields scientifically defensible results and protects the integrity of the investigation. Ignoring the hypothesis or drawing premature conclusions would misdirect the investigation, and while a second opinion can be valuable in complex cases, it doesn't replace the need for laboratory confirmation when evidence is inconclusive.