Which of the following is NOT a threat to crime scene integrity?

• A. Weather changes
• B. Addition of material to scene
• C. Destruction of material in the scene
• D. Movement of material in the scene

Answer: (A)

Maintaining crime scene integrity means keeping the scene and its evidence in the same condition as when investigators arrive, without anything being added, moved, or destroyed. The actions that directly compromise this state are adding material to the scene, destroying material, or moving material from its original place. Weather changes, while potentially threatening, are external environmental conditions that can be mitigated with protective measures (covers, tents, rapid processing). If the scene is properly protected and documented, weather does not inherently alter the evidential state in the same direct way as introducing, removing, or shifting items. So weather changes are not considered a direct threat to the scene’s integrity in the same sense as the other choices.