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.