James Scandirito Trial Day 3 Part 1 CST Mary Cassandra Testifies

TL;DR

Crime scene technician discusses the process of documenting crime scenes, using chemicals like Blue Star for blood detection, and collecting evidence from a residence and vehicle.

Transcript

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Key Insights

• 🎑 Crime scene technicians play a crucial role in documenting crime scenes, collecting evidence, and preserving it to ensure its integrity is maintained.
• 🩸 Chemicals like Blue Star are used as presumptive tests for blood and can help indicate the presence of potential blood stains.
• 🩸 Luminescence from Blue Star can react with substances other than blood, so further testing is necessary to confirm the presence of blood.
• 🎑 The process of crime scene processing involves thorough documentation through photographs and videos, as well as collecting physical evidence from the scene.

Questions & Answers

Q: What is the role of a crime scene technician?

Crime scene technicians are responsible for documenting crime scenes, collecting evidence, and preserving that evidence to ensure it is not contaminated. They may also assist law enforcement in evaluating search warrants and processing crime scenes.

Q: How does the Blue Star chemical work for blood detection?

Blue Star is a chemical used as a presumptive test for blood. When sprayed on a surface, it may react with blood and emit a luminescent blue glow, indicating the presence of blood. However, it can also react with other substances containing copper or certain chemicals, which is why further testing is necessary to confirm the presence of blood.

Q: What types of evidence did Miss Cassandra collect from the crime scene and vehicle?

Miss Cassandra collected items such as a step stool, a cardboard box, swabs of stains, and mats from the crime scene. From the vehicle, she collected swabs of potential blood stains and items found in the trunk.

Q: Were there any blood-like substances identified in the crime scene or vehicle?

The Blue Star chemical reacted in some areas of the crime scene and vehicle, indicating the presence of potential blood-like substances. However, further testing and analysis would be required to confirm if those substances were indeed blood.

Summary & Key Takeaways

• Miss Cassandra, a crime scene technician, discusses her role in documenting crime scenes and collecting evidence from crime scenes and vehicles.

• She explains the process of using chemicals like Blue Star for blood detection and preserving evidence from crime scenes.

• Miss Cassandra provides details about processing the residence and vehicle in a death investigation case.