What makes a successful criminal investigation?
It starts with the reporting of the crime. It is concluded as a successful investigation when the inquiry has been brought to its logical conclusion. In order to do this, all facts and physical evidence must be considered and put in their logical arrangement.
An effective investigator must be able to commit to the time and attention necessary for all steps of the investigation, from planning to the final work product. The investigator must also have the capacity to expand her work if the investigation grows beyond its original scope.
These include collection, analysis, theory development and validation, suspect identification and forming reasonable grounds, and taking action to arrest, search, and lay charges.
Interrogation of suspects is one of the most important functions of criminal investigation. In most countries this proceeding is delicate because a confession gained in violation of the suspect's rights can be repudiated in court.
Executive Summary. The Executive Summary is the most important piece of an investigative report. It is also the most read. It should provide a complete, yet concise, picture of the particular complaint or allegation, the scope of the investigative activities, a summary of the findings, and a conclusion.
Investigate the incident, collect data. Analyze the data, identify the root causes. Report the findings and recommendations.
Tools To establish facts and develop evidence, a criminal investigator must use these tools-information, interview, interrogation, and instrumentation.
List seven characteristics commonly found in good investigators. Being passionate about following the truth, being detailed oriented, patient, tenacious, objective, conscious of own thinking and biases, and being knowledgeable about the skills needed to conduct evidence and present that evidence in court.
The golden rule in interview states that “Never conduct or let anyone conduct an interview if the interviewer has not gone to the crime scene”.
In general, every crime involves three elements: first, the act or conduct (actus reus); second, the individual's mental state at the time of the act (mens rea); and third, the causation between the act and the effect (typically either proximate causation or but-for causation).
What are 3 things a good investigation needs?
...
- they share what they have learned.
- when they investigate they write procedures.
- they keep good records including words, charts and graphs.
I – THE COMMUNITY; II – THE LAW ENFORCEMENT; III – THE PROSECUTION; IV – THE COURTS; and V – CORRECTIONS.

Decision making ability – An investigator is a fact-finder. They must resist the temptation to form rash judgements and must disabuse their mind of all prejudices in making decisions. The prospects of success depend largely on the ability to maintain objectivity in making decisions.
Generally, the goals of criminal investigation are the following: 1. To determine whether a crime has been committed; 2. To legally obtain information or evidence; 3. To identify persons involved in the crime; 4.
Objectives of criminal Investigation
locate, document, and preserve evidence in crimes. Arrest suspects in crimes. Recover stolen property. Prepare sound criminal cases for prosecution.
Investigative components. Bowker (1999) notes that investigative plans have four components: a predication, elements to prove, preliminary steps, and investigative steps.
In the performance of his duties, the investigator must seek to establish the six (6) cardinal points of investigation, namely: what specific offense has been committed; how the offense was committed; who committed it; where the offense was committed; when it was committed; and why it was committed.
The golden rule in interview states that “Never conduct or let anyone conduct an interview if the interviewer has not gone to the crime scene”.
The preliminary investigation is the police agency's first response to a report that a crime has occurred. As in every investigative effort, the primary objective of the preliminary investigation is to determine who committed the crime and to apprehend the offender.
Concise; Accurate; and. Probative (furnishing evidence or proof).
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