(1) The responsible member for a crime scene may maintain the crime scene for a reasonable period to enable necessary investigations to be conducted.
(2) In deciding what is a reasonable period for maintaining a crime scene, the responsible member must take into account the following matters:
(a) the complexity of the relevant offence being investigated;
(b) the size of the crime scene;
(c) the availability of investigators or examiners with the appropriate knowledge to conduct investigations;
(d) any matter relevant to the exercise of crime scene powers.