Investigations

Question 1

What is a criminal investigation?

Answer 1

An investigation conducted by police officers to ascertain whether a person should be charged with an offence or if a person charged with an offence is guilty.

Question 2

Who is an investigator?

Answer 2

Any police officer involved in a criminal investigation, responsible for duties under the investigation code.

Question 3

What are the 5 Pillars of Investigation?

Answer 3

1. Preserve life
   
   2. Preserve scene
   3. Secure evidence
   4. Identify victims & witnesses
   5. Identify suspect(s)

Question 4

What does ‘Preserve Scene’ involve?

Answer 4

• Can include people, vehicles, and objects
• Remember suspect’s entry/exit
• Consider the victim and risk of cross-contamination
• Use cordons and crime scene logs

Question 5

What does ‘Secure Evidence’ involve?

Answer 5

• Think as widely as possible
• Preserve the scene
• Aim to obtain blood/DNA from suspect and victim
• Link suspects to the scene (fingerprints, CCTV, receipts, etc.)

Question 6

What does ‘Identify Suspects’ involve?

Answer 6

• Early arrest enquiries
• Follow legislation (e.g., PACE, Human Rights Act 1998)
• Conduct person/premises searches
• Seek specialist guidance when needed

Question 7

What does ‘Secure Evidence’ involve?

Answer 7

• Think as widely as possible
• Preserve the scene
• Aim to obtain blood/DNA from suspect and victim
• Link suspects to the scene (fingerprints, CCTV, receipts, etc.)

Question 7

What does ‘Identify Victims & Witnesses’ involve?

Answer 7

• Don’t assume
• Capture detailed witness information
• Use MetCC call logs
• Use House to House enquiries
• Check PNC and CONNECT systems

Question 9

What is an ethical investigation?

Answer 9

• Conducted with integrity, common sense, and no bias
• Avoid heavy-handed/discriminatory tactics
• Maintain balance between involved parties
• Aid prosecution through evidence
• Maintain a professional, victim- and public-focused approach