Understanding the source of the material is essential in order to conduct an effective examination of it. It will help explain its characteristics and relevance to others.
There are some questions about the source material you will need to ask. For example:
The witness
CCTV
What is their background?
Which camera?
How vulnerable are they?
What is the type of camera?
What is their relationship to the criminal?
Are there any blind spots?
Planning and preparation
You will need to do the following:
Set clear objectives for retrieving the material from the source
Identify the most appropriate way to carry out the examination
Identify specialist equipment or expertise
Identify the most appropriate location for examination
(Betts 2017)
With the sources, you will need to consider the following:
The witness
CCTV
Objective?
Objective?
Expertise?
Equipment required?
Method of the interview?
Method of examination?
Location of the interview?
Location of examination?
Method of recording?
Method of recording?
Examination
The investigator will need to identify
What is known
What is not known
Consistencies
Conflicts
(Betts 2017)
Recording and collection
The investigator must consider:
The records that need to be made
How to store the material
The security of the material
Access arrangements to the material
(Betts 2017)
Evaluation
The investigator will need to:
Identify any fast track actions
Identify further lines of investigation
Apply the mindset will ensure the material is gathered
Test reliability at the earliest opportunity
Take immediate action
Make relevant records
Ensure materials are properly stored
(Betts 2017)
References
Betts, M.,J. (2017) Investigation of Fraud and Economic Crime Oxford, Oxford University Press