How should evidence be collected at a crime scene?

Evidence should be collected at a crime scene systematically and with thorough documentation to ensure that it is preserved in its original state and that the integrity of the investigation is maintained. Systematic collection involves following a structured approach that includes identifying, collecting, and preserving evidence in a logical order. This ensures that nothing is overlooked and that the evidence is collected in a manner that can withstand legal scrutiny.

Documentation is crucial as it provides a detailed account of the evidence collected, including its location, condition, and any other relevant details. This not only helps to establish a chain of custody, which is vital for admissibility in court, but it also aids in reconstructing the crime scene during investigations and trials.

Random collection or an unstructured approach could lead to the loss or contamination of evidence, making it unreliable. Collecting evidence on an as-needed basis can create gaps in the investigation, and simultaneous collection by multiple officers might lead to confusion or potential cross-contamination of evidence. Thus, the systematic collection with proper documentation stands out as the best practice in evidence collection.