Search patterns used in crime scene investigation
For a productive crime scene investigation, investigators must ensure that they use the appropriate search pattern. There are various search patterns used in crime scene investigation. The lane search pattern involves the investigators lining up and staying in a straight line shoulder to shoulder. They remain in the straight line until everyone in their line is through with their area. The researchers move in one direction from one of the searches to another.
In the grid search pattern, the investigators set up a perimeter of the crime where the evidence is available. They move across the search field at a right angle to where they first started. It covers almost every inch of the scene.
The spiral pattern involves the investigators determining the main point continuing search outside in a spiral manner around the same central point. Tracking is done in a clockwise direction in a circle beginning from inside and work their way out, causing a spiral design.
Circle search pattern involves starting at the middle point of the crime scene. At the centre spot along rope is attached which drives the steak. About 3 feet knots are tied which are held by the investigators who search in a circular motion.
Zone divides the scene into four equal sections, and the team splits up each member having to search their area orderly for evidence.
The search pattern to use in crime scene investigation depends on the location and size of the area of the scene and the resources available. Depending on whether the scene is interior or exterior determines the method to use. Exterior scenes require additional resources and more personnel. An investigator should choose the method wisely to enable carrying the search in due diligence and attention to detail.