What are the three main types of crime scene search patterns?

The three main types of crime scene search patterns are Spiral, Lane (or Line), and Grid (or Quadrant).

Spiral search patterns are effective in situations where the boundaries of the scene are not clearly defined; the investigator moves in a spiral pattern outward from a central point to cover all areas systematically. This method is particularly useful in smaller scenes or where evidence may be scattered around a focal point.

Lane or Line search patterns involve searchers forming a line and moving in straight lines across the scene, often used in larger outdoor areas where visibility is good. This approach ensures coverage of a large area and helps team members communicate effectively about their search.

The Grid or Quadrant search pattern entails dividing the crime scene into smaller sections to be searched systematically, allowing for thorough examination and minimizing the risk of missing any evidence. This method can be particularly useful in larger, more complex scenes.

Other options, while mentioning terms like Random or Circular, do not accurately reflect the standardized and widely accepted procedures used by crime scene investigators. Implementing the correct search patterns is crucial to ensure that evidence is not overlooked and that the investigation maintains its integrity.