what is a crime scene investigation?

4 comments

1.Some one who investigates a murder sometimes in a lab for evidence to find the murderer

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Tina Thurbell

I think you just answered your own question :)

But yeah, it us someone who analyzes a crime scene and collects evidence. It is not necessarily for just murders (homicides), but that is usually the case.

If you need more of an answer, try watching an episode of CSI ;)

Happy Dude

CSI is the gathering of potential evidence at a crime scene. A crime doesn’t have to be murder contrary to what all the tv shows broadcast. It could be rape or burglary or a physical attack or murder (homicide).

Depending on the crime commited, different forensic specialists attend the crime scene. In the case of a murder where a body has been found, a forensic entomologist will investigate the insects on the body. At a burglary, fingerprinting expects will analyse any finger prints lifted from the scene. In the case of rape, any blood and semen from the attacker will be searched for.

The list of evidence searched for goes on and on and on and the type of evidence looked for depends entirely on the crime commited.

Tom

I don’t think watching CSI would be the best source of information.

The main thing ‘wrong’ with how the show depicts reality is that the same people are the ones that investigate the crime scene, analyze the samples in the lab, and go and arrest the people they find responsible.

In reality, all these tasks would be done by different teams of people, with each team specializing in their own field.

Back to the question: A crime scene investigation would be the people at the place the crime took place, looking for and collecting the evidence left behind.

Rajvi

On TV shows like “CSI,” viewers get to watch as investigators find and collect evidence at the scene of a crime, making blood appear as if by magic and swabbing every mouth in the vicinity¬≠. Many of us believe we have a pretty good grip on the process, and rumor has it criminals are getting a jump on the good guys using tips they pick up from these shows about forensics.

But does Hollywood get it right? Do crime scene investigators follow their DNA samples into the lab? Do they interview suspects and catch the bad guys, or is their job all about collecting physical evidence? In this article, we’ll examine what really goes on when a CSI “processes a crime scene” and get a real-world view of crime scene investigation from a primary scene responder with the Colorado Bureau of Investigation.

Who’s at the Scene?
Police officers are typically the first to arrive at a crime scene. They arrest the perpetrator is he’s still there and call for an ambulance if necessary. They are responsible for securing the scene so no evidence is destroyed.

The CSI unit documents the crime scene in detail and collects any physical evidence.

The district attorney is often present to help determine if the investigators require any search warrants to proceed and obtain those warrants from a judge.

The medical examiner (if a homicide) may or may not be present to determine a preliminary cause of death.

Specialists (entomologists, forensic scientists, forensic psychologists) may be called in if the evidence requires expert analysis.

Detectives interview witnesses and consult with the CSI unit. They investigate the crime by following leads provided by witnesses and physical evidence.

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