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Crime Scene
Crime Scene Investigation >
Is a crime scene always one specific location or area?
Why and when is a crime scene investigation conducted?
What kind of results can be expected from the crime scene investigation process?
What are the limitations of the crime scene investigation process?
How is quality control and quality assurance performed?
What information does the report include and how are the results interpreted?
Are there any misconceptions or anything else about crime scene investigation that would be important to the non-scientist? What are the basic steps of scientific crime scene investigation?
Is a crime scene always one specific location or area?
No, it is not.

An offender with or without associates might lure under malicious pretext, kidnap at one location (primary crime scene), transport the victim (the car, aircraft being a secondary crime scene), commit another crime at a distant location (murder, for instance) and then dispose of the body at a fourth scene.
Usually, such criminals maintain criminal silence.
Here are further guidelines.

What kind of results can be expected from the crime scene investigation process?
A crime scene investigation should provide detailed documentation of the condition of the scene and a collection of evidentiary items that can be analyzed to assist the investigation. As forensic technologies and laboratory techniques continue to improve and become more sophisticated, the value of the trace and biological evidence that is collected at a scene has increased enormously.

What are the limitations of the crime scene investigation process?
The ability of investigators to collect certain evidence may also be limited if, by collecting one type of evidence, they must compromise another.

What information does the report include and how are the results interpreted?
Date/time when technicians arrive
Weather conditions at the scene
Perpetrator’s point of entry and exit (if this can be determined)
Theory about perpetrator’s movements/actions
List of evidence collected
List of photos/videos taken
Vehicle descriptions
Emergency medical personnel documents
Sketches/diagrams of the scene
List of related subjects (suspects, victim, others involved)

Crime Scene Investigator
Crime Scene Analyst
Crime Scene Reconstructionist
Senior Crime Scene Analyst

Here are further guidelines.


What are the basic steps of scientific crime scene investigation?
List and describe the definitions or classifications of crime scenes.
What are the eight types of information that can be obtained from the examination of the physical evidence found at crime scenes?
What are the four components of crime scene management?
What are the five crime scene investigation models? Describe them and give the advantages and disadvantages of each.
Discuss the duties of the first responder at a crime scene.
What is the multilevel approach to crime scene security?
What are the components or tasks of crime scene documentation? What is the purpose of each?
What is the basic process used for photographing crime scenes? Discuss each step.
What are the two basic types of crime scene sketches? What are the two types of perspectives used in sketches?

What are the basic steps of scientific crime scene investigation?
Basic Stages for a Crime Scene

Investigation — Possible Homicide

Approach the Scene
Secure and Protect the Scene
Initiate Preliminary Survey
Evaluate Physical Evidence Possibilities
Prepare a Narrative of the Scene
Capture the Scene Photographically
Prepare the Crime Scene Sketch
Conduct a Detailed Search
Record and Collect Physical Evidence
Conduct a Final Survey
Release the Crime Scene

Q: What do you do when a crime occurs in the White House?
White House = 1600 Pennsylvania Ave NW
Washington, DC 20500
Q: What do you do when a crime originates in the White House?
Q: What do you do when conspiracies originate from and/or are enhanced in the White House, leading to justice being cheated?
Q: What do you do when the governor of California is involved in crimes and conspiracies?
Q: What do you do when the mayor is involved in crimes and conspiracies?
Q: What do you do when federal prosecutors are involved in crimes and conspiracies?
Q: What do you do as a police criminal investigator when federal prosecutors are involved in a crime?

People involved in crimes and conspiracies have no immunity.
If justice is cheated under any flawed pretext, excuse, or trick, is the result justified?
Q: What are your duties and responsibilities?
Q: What do you do when crimes involving white males occur and you, who are white, are pressured not to investigate or to remain inactive?
Q: What do you do when a reported crime involves a criminal in the White House?
Q: What do you do when a reported crime involves a criminal in the White House who tricks you and redirects your investigation?
Q: What do you do when federal prosecutors pressure you not to investigate a reported crime?
Q: How do you deal with a corrupt judge?
Q: How do you deal with an incompetent judge?
Q: What do you do when systems collapse?
Q: What do you do when new systems emerge?
Q: Who else was involved in the sabotage and conspiracies?
    Q: Where do they live?
    Q: Where is their office?
    Q: What's their ethnicity?
    Q: Do you know the head of the office?
    Q: Who are their friends?
    Q: Where do they hang out?
    Q: Where are their bank accounts?

Q: Who among the regulators were involved?
Q: Who among the medical doctors were involved?
Q: Who among the psychologists and social workers were involved?
Q: What airlines were involved?
Q: What ground transportations were involved?
Q: What places were involved?
Q: Who among the regulators were involved in tampering with the documents to enhance the harm?
Q: In addition to the names mentioned, what other businesses were involved in these harmful activities?
Q: In addition to the names mentioned, what other people were involved in these harmful activities?
Q: How should police follow up once a complaint about harms appears on the World Wide Web?

Q: How should the suspension of police officers proceed if they lead to inaction about complaints and vivid harms that appear on the World Wide Web?
A: They must be given a chance to clarify that they didn't face pressure from higher ups to remain silent or not to investigate.
Take a look at this.
What did you understand?
What punishments do they deserve?

Q: What do you understand by predecessor and successor?
Q: How do police hand over cases from predecessor to successor?
Q: How should police hand over cases from predecessor to successor?
Q: Did the former police officer hand over this case to you properly?
Q: What did he tell you about this case?
Q: What is your telephone number?
Q: What is the best way to reach you in an emergency?
Q: When were you informed about claims for those posting on the World Wide Web?
Take a look at this
Q: What did you understand?
Q: What punishments do they deserve?
Here are further guidelines.
Crime Scene Investigations
Crime Scene Investigator

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) 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.

Approach the Scene

The crime scene investigator returns the microphone to its clip and begins the drive to the latest assignment. A crime scene investigation begins well before the CSI enters a structure, an open field or wooded area. Usually the radio dispatch message is brief and seldom reveals the full nature of the incident. Most often this is done to avoid drawing on-lookers and the media who may be monitoring the dispatch frequency. As the CSI turns onto the street in question, his first obligation is to "turn on" his powers of observation. He may make a mental note of what he sees, hears and smells-or better still-records them on a digital voice recorder. His first reaction to the scene must be, "Does anything look out of place? What odors may be noticeable and are there unusual sounds.

Secure and Protect the Scene

Hopefully the first responders haven't caused too much disruption to any potential physical evidence. Before even stepping inside the structure, ingress and egress to it must be controlled. Sentries at all possible entrances should be put in place. The CSI, after learning the basic facts-in this case it appears that a white male appears to have a single bullet wound the head and rigor has set in-- this from the first responders, so the CSI will establish the boundaries of the crime scene. Then… out comes the crime scene tape.

Initiate Preliminary Survey

Again… before entering the structure an exterior survey is needed. This may be nothing more that walking around the exterior of the structure to see if any obvious evidence is apparent. This would include open windows, damaged doors, ladders and the like. The question the CSI is asking is… how was entry made to the structure? Once indoors, the CSI will make a visual survey of the actual room in which the incident reported took place. This is a good time to also take overall photos of the scene. He will then survey adjoining rooms to determine if these spaces may have information relative to the incident. Most law enforcement agencies conduct such investigations of an unattended death (no physician present) as a possible homicide-until it is determined otherwise. Unlike some TV dramas, the CSI is on site for the purpose of finding, evaluating and collecting physical evidence. In most agencies, statements from witnesses and survivors are handled by the investigators/detectives.

Of course, during this entire survey period, the CSI is taking notes and/or recordings of his sensory observations.

Evaluate Physical Evidence Possibilities

The very nature of what appears to be obvious should trigger the thought-processes of the CSI. What happened here, when did it happen and what sort of evidence should be present? Questions that should be answered initially are:

•Did the shooting occur in this room
•Has the body been moved (by first responders or perpetrator(s)
•Has any object been moved (especially by first responders or family members
•Were additional shots besides the one in the victim's head. This means examining walls, ceiling, room objects, etc.
•Are shell casings apparent. If so-mark them with placards, evidence tents, etc. so they will be obvious in photos.
•Are traces of blood apparent in other areas of the room-indicating movement of the victim •Is blood spatter apparent
•Are there signs of a struggle
•Are there visible footprints in the blood
Each crime scene may well generate other questions to be answered by the CSI. The above list is simply the most obvious questions.

Prepare a Narrative of the Scene

The CSI's notes can serve as a very critical part of the overall physical evidence available from the scene. The investigator must keep in mind that months or even years later this case may go to trial. Your notes must present the full story of what you saw and any impressions the evidence gave you. Avoid speculation as to what occurred unless you have physical evidence to back it up.

Capture the Scene Photographically

Be certain to have overall, medium range and close-up shots of any potential physical evidence. Be certain to include scales in the close-up shots.

Prepare the Crime Scene Sketch

Many CSIs will prepare the rough sketch at the scene and will complete a detailed sketch back at headquarters. The rough sketch should contain no more or no less than the final, detailed sketch. It is always recommended that an assistant help out when taking measurements, and it's a good idea is to have this individual verify each measurement to avoid questions later.

Conduct a Detailed Search

Go over every square inch of the scene in an attempt to locate even the smallest particle of evidence. (This brings to mind a recent case wherein a woman was brutally beaten to death in her bedroom. Several days after the crime scene was released to the family, the victim's sister found a tooth from the victim on the bedroom carpet). Many crime scenes warrant the use of an evidence vacuum in the scene to collect any potential microparticle evidence such as hair and fibers. This step should be performed prior to any close in inspection of the victim.

Record and Collect Physical Evidence

As potential evidence is located it should be recorded on the crime scene sketch as well as in photographs. If your agency offers the luxury of having a videographer on hand, video often tells a compelling story to a jury.

Crime scene evidence is useless unless it is properly marked and packaged and a Chain of Evidence is begun from the time it is picked up. Use the proper type of containers for all evidence collected. Never package objects wet with blood or other physiological fluids in plastic bags, as this will accelerate decomposition. Label and identify all evidence collected, including the notes taken by the investigator.

Of course, the digital age we live in takes note of electronic devices like computers and cellphones. This type of evidence requires special handling and only experts trained in working with digital items should be permitted to handle and collect these items.

Conduct a Final Survey

Be certain that every package containing physical evidence is collected—leave nothing behind. Make a final walk-through to be certain that all potential evidence is bagged and tagged.

Release the Crime Scene

While it is normal for others having an interest in the property to want to regain access, the CSI should not be rushed, coaxed or bullied into releasing the scene until the job is done.

1.A man is being accused of murder. He claims his identical twin is the real culprit. He also claims that the fingerprints the CSI's found aren't his, but his twins, who has the same fingerprints as him. Is this possible?
Please answer this question. Yes, identical twins always have identical fingerprints. No, identical twins do not have identical fingerprints. It is plausible. Identical twins sometimes have identical fingerprints.

2.A CSI team found a hair at a murder scene. The root of the hair is not attached. Can they identify it as male or female?
Please answer this question. Yes. No.

3.There was an explosion at a manufacturing plant. The bodies were burned too badly to identify the victims by sight. What is the next most common way to identify the body in this situation?
Please answer this question.
DNA analysis Clothing Dental records Bone structure

4.A CSI team responds to a body that was found dead in the woods off a major highway. How can they tell how long the body has been dead in this location?
Please answer this question.
Call in an entomologist to study the arthopods (bugs) found on the body. Consult with a meteorologist, who can study the weather patterns in the region and determine the effects on a body.
Make an announcement to the public in order to find any eyewitnesses.

5.A skeleton is found inside an empty warehouse. What is the quickest way to determine the gender? Please answer this question.

Skull size Height Bone density Pelvic bone structure

6.Of the following options, which is the least reliable source of evidence?
Please answer this question.
DNA data Eyewitness account Latent fingerprints

7.Are you a male or female CSI?
Please answer this question.
I am a male CSI. I am a female CSI.

8.A CSI forgot to bring luminol to a crime scene. What can the CSI now not scientifically and quickly detect at the scene?
Please answer this question.
Blood Saliva Urine COffee

9.Blood from a crime that occured 2 hours ago was found on a doorknob at a crime scene. A CSI wants to determine if the person who left the blood had alcohol or drugs in his/her system at the time of the crime. Is it possible to determine this from the blood on the doorknob? Please answer this question.
Yes. No.

11.What kit is important for a CSI to bring to every crime scene?
Please answer this question.

Manicure kit Computer repair kit Fingerprint Kit Sewing kit

12.Victimology, a useful area of knowledge when training to become a better CSI in order to better understand crime scenes, is the study of what?
Please answer this question.
The scientific study of victimization A theory relating to blaming victims The 7 step process of healing victims 18.Which of the following methods can help determine how long a body has been dead?