What should investigators document when they suspect an ignition source?

When investigators suspect an ignition source, it is crucial to document sample analysis results because such analysis provides concrete evidence regarding the materials involved in the fire and helps establish the nature of the ignition source. This documentation can reveal the presence of accelerants or other flammable materials, which can directly connect to how the fire started. Analyzing samples taken from the scene is essential in determining the specific causes and conditions that led to the ignition, thereby establishing a more accurate fire incident report.

While documenting weather conditions, witness accounts, and fire pattern measurements can all aid in understanding the overall context of the fire, the specific findings from sample analysis are vital when identifying the ignition source and can shape the direction of the investigation.