Phillips, Calvin C. and McFadden, David A. Investigating the Fireground. Penwell Publishing Company. p. 107.

Abstract: This book contains a small section that discusses evidence of arson devices. An arson device can be any number of things from a container that held flammable liquid to a state of the art timing device. A firefighter's first priority should always be to extinguish the fire. However, if it is possible, the firefighter should try to preserve any evidence of arson. Any device that looks as though it may have been an ignition device should be left alone. This includes the burned materials surrounding the device because the investigator must determine what material the ignition device initially burned. If arson evidence is discovered, the cleanup phase should be delayed until the fire investigator assesses the situation. If evidence is touched or moved its credibility is destroyed for prosecution purposes.

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