The key principle underlying crime scene investigation is a concept that has become known as Locard’s Exchange Principle. It states that whenever someone enters or exits an environment, something physical is added to and removed from the scene.
What are the principles of investigation?
Describe and analyze the fundamental principles of investigations including, but not limited to: obtaining, developing, and substantiating information; processing crime scenes; conducting interviews and interrogations; developing informants; developing sources of information; and conducting surveillance and undercover …
What are the principles of Crime Investigation?
Understand crime scene security, approaching a scene, searches and documentation of evidence. Understand latent print recovery and documentation. Understand tasks related to trace evidence identification and recovery.
What are the cardinal principles of criminal investigation?
SIX CARDINAL POINTS OF INVESTIGATION WHAT specific offense has been committed? Nature of crime WHERE crime was committed? Place or location WHEN it was committed? Time and date WHOM it was committed?
What is the purpose of criminal investigation?
Applied to the criminal realm, a criminal investigation refers to the process of collecting information (or evidence) about a crime in order to: (1) determine if a crime has been committed; (2) identify the perpetrator; (3) apprehend the perpetrator; and (4) provide evidence to support a conviction in court.
What are 3 methods of investigation?
Scientists use three types of investigations to research and develop explanations for events in the nature: descriptive investigation, comparative investigation, and experimental investigation.
What are the six methods of investigation?
A six-step, structured approach to incident investigation (Fig 1) helps to ensure that all the causes are uncovered and addressed by appropriate actions.
- Step 1 – Immediate action. …
- Step 2 – Plan the investigation. …
- Step 3 – Data collection. …
- Step 4 – Data analysis. …
- Step 5 – Corrective actions. …
- Step 6 – Reporting.
What is the golden rule in criminal investigation?
The Golden Rule in Criminal Investigation. “ Do not touch, alter, move, or transfer any object at the crime scene unless it is properly marked, measured, sketched and/or photographed .”
What is the purpose of investigation?
The purpose of an investigation is to establish relevant facts to prove or disprove allegations of fraud and corruption. It is a legally established fact-finding process conducted in an impartial and objective manner, with the aim to establish the relevant facts and make recommendations in this connection.
What is investigation procedure?
Investigation is the process of gathering information about an accident, the resulting harm, possible legal liability of any party for having caused that harm, and potential sources of restorative payments owed to or collectible from others to finance recovery from that harm.
What are the 5 steps of crime scene investigation?
INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS.
What are the three objectives of criminal investigation?
Very broadly, the objectives of the criminal investigation process are (1) to establish that a crime was actually committed, (2) to identify and apprehend the suspect(s), (3) to recover stolen property, and (4) to assist in the prosecution of the person(s) charged with the crime (Swanson et al.
What are the 3 fold aims of investigation?
Criminal Investigation is the collection of facts in order to accomplish the three-fold aims – to identify the guilty party; to locate the guilty party; and to provide evidence of his (suspect) guilt.
What are the major goals of criminal investigation?
To determine whether a crime has been committed, to legally obtain sufficient information and evidence to identify the person responsible for a crime, to locate and arrest the suspect, to recover stolen property, to present the best possible case to the prosecutor, and ultimately to gain a conviction.
What are the four phases of criminal investigation?
These include collection, analysis, theory development and validation, suspect identification and forming reasonable grounds, and taking action to arrest, search, and lay charges. In any case, as unpredictable as criminal events may be, the results police investigators aim for are always the same.
What are the qualities of effective investigation?
Skills & Qualities Necessary to Be an Effective Investigator
- Communication and Interview Skills. Interviews are often the cornerstone of any investigation. …
- Control Emotions. …
- Honesty and Ethics. …
- Technical Skills and Knowledge. …
- Knowledge of the Law. …
- Critical Thinking and Problem Solving. …
- Research Skills. …