According to the guidelines, which of the following items is not the responsibility of the assigned investigator to seize at a crime scene?

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In the context of crime scene investigations, the primary responsibility of the assigned investigator is to secure and collect evidence that is directly related to the crime. Blood and fibers, while they are critical evidence, typically require specific handling and collection protocols due to their nature.

The handling of biological evidence like blood often involves professionals such as forensic technicians who are trained specifically in the collection of such sensitive materials to prevent contamination and degradation of the samples. Similarly, fibers may require particular extraction techniques to ensure they are collected without loss or contamination, potentially also involving specialized personnel.

On the other hand, weapons, explosives, personal property of the victim, and footwear impressions are generally within the immediate purview of the investigator to manage and secure. Weapons and explosives must be handled carefully due to safety concerns, while personal property is crucial in establishing the circumstances surrounding the crime. Footwear impressions can provide valuable forensic evidence about the presence of a suspect at a scene.

Thus, the focus on professional handling for blood and fibers distinguishes them from the other items listed, making the responsibility for seizing these particular items less likely to fall to the primary investigator at the scene.

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