The type of activity police investigators engage in and material gathered \_41\_, depending on whether investigations use the reactive or proactive method. \_42\_, they all go through similar stages. Every investigation is different and may require a different route through the process, e.g., in some cases the identity of the offender is known \_43\_ and the investigation quickly enters the suspect management phase. \_44\_, the identity of the offender may never be known or is discovered only after further investigation. When receiving reports, counter staff should ensure that \_45\_ record, retain and reveal all material and pass it to the investigating officer.