What is the first step that should be taken when documenting a crime scene?

The first step in documenting a crime scene is photographing the scene. This is crucial because visual documentation provides a permanent record of the crime scene as it was found, capturing details that may later be lost or altered. Photographs should be taken from various angles and distances to ensure that all aspects of the scene are covered, including the overall setting and close-ups of specific pieces of evidence.

Capturing this visual evidence first allows investigators to have a baseline reference for the scene before any alterations occur due to the presence of personnel, collection of evidence, or environmental changes. After the scene is thoroughly photographed, investigators can move on to other critical steps such as establishing a perimeter, interviewing witnesses, and collecting evidence, all of which rely on the initial documentation for accuracy and context.