M2 - Scene preservation

The first officer on the scene must record the time, date and weather condition. Then they must cordon and preserve the scene to the largest extent. this is important because it ensures that no one can enter the scene and contaminate or destroy any physical evidence which may jeopardise the investigation. specialist units also take a part in preserving the scene. The police have a specialist unit who are trained to deal with scenes of crimes they are trained in looking and detecting almost invisible evidence, they are also trained in how to handle the evidence they they don't contaminate or destroy it themselves. The fire serive water rescue unit assit if there is a spillage which could result in evidence being destroyed. The police serive personel are not allowed to intervene with casulties as it may still contaminate evidence.