Physical Material
Preserve and collect evidence
E.G. DNA, fingerprints, medical reports and CCTV
Witnesses
Strategies to identify, interview and obtain their account
E.G. Victim, eyewitness, other significant witness, general witness and officer statement
Intelligence
Strategies to obtain relevant information
E.G. Use of IDM and other internal databases
Public Awareness
Strategies to elicit information
E.G. Door-knocks and requests to public for assistance
Suspects
Strategies to ID, implicate and exclude suspect
E.G. Strategies to locate, arrest plan and interview plan