Proof of compliance should be copies of on-call duty investigator. The policy should address what is maintained in the case file, where the file will be kept, who has access to the file and when case is cleared, where is the file stored. A case log is maintained to document all follow-up investigations. A written directive specifies accountability for conducting preliminary and follow-up criminal investigations. Accountability for who is responsible when conducting preliminary and follow-up investigations is clearly stated.
Compliance can be policy or check off sheet outlining what to do.
Procedure can be policy or a form that provides guidelines to be followed when conducting a follow-up investigation. If the agency has investigators, there is a procedure that provides for periodic attendance of investigators at roll-call meetings conducted for patrol officers. To enhance the relationship between patrol and investigators and facilitate information exchange, a procedure or policy should be in place to require attendance to roll-call by investigators. If technical aids for the detection of deception are used, a written directive governs their use in criminal investigations. Examiners must be graduates of institutions providing training for this purpose.