These are people believed to have witnessed an offence, part of an offence or events closely connected with it, but who are opposed to the investigative process and/or biased against the examining party. The reasons for their opposition might include their lifestyle or they may have a close relationship with the alleged perpetrator and intend to appear in court as a defense witness.
Some of these witnesses may simply refuse to cooperate with the police, others might provide false information intended to support the alleged perpetrator’s account.
Records must be kept of all interactions with hostile witnesses, regardless of the reason for their hostility and the extent of their cooperation. Where hostile witnesses consent …show more content…
The most important aspect of evidence collection and preservation is protecting the crime scene. This is to keep the pertinent evidence uncontaminated until it can be recorded and collected. The successful prosecution of a case can hinge on the state of the physical evidence at the time it is collected. The protection of the scene begins with the arrival of the first police officer at the scene and ends when the scene is released from police custody.
Once the scene has been stabilized, the scene and any other areas which may yield valuable evidence (driveways, surrounding yards, pathways, etc.) should be roped off to prevent unauthorized people from entering the area and potentially contaminating it. Investigators and other necessary personnel should be contacted and dispatched to the scene, however, under no circumstances should the telephone at the scene be used. Once the officer has secured the scene, he or she could do the following: record witness names and others who may have entered or been at the scene; separate witnesses and suspect(s); do not discuss the events or the crime with witnesses or bystanders or let the witnesses discuss these events; listen attentively but discreetly; and protect evidence which may be in danger of being destroyed. Any actions taken should be reported to the