The crime
scene investigation is based on observation, we closely perceive every details,
the type of work necessitates the observation with almost photographic exactitude.
The police officer has to see through things to notice the essence of missing
fragments, he or she puts together later on. We do not imagine things, yet, we base
our assumption on evidence.
After it
had been estimated that death was caused by the intent or agency of some other
person, or by the suicide or accident – the detailed investigation begins.
The significance
of the investigation depends on its case. In suicide or accidental death the
detailed examination can be limited to the exact pieces of information related
to events. On the other hand, the death caused by the intent or another person
involves a thorough investigation, though, everything is investigated.
At the
onset of the investigation the criminal provides the contradictory and false statements
about personal actions to create extenuating circumstances.
The police
officers who are investigation the crime scene have an opportunity of producing
an accurate reconstruction of the actual course of events that such an
attempt by the criminal cannot succeed.
When the examination
of body has been concluded, the body can generally be removed for the autopsy. Photographing
the scene of the crime should have been completed before this.
As a rule, the
investigation is continued with attention to such details or places where
anything might be expected. Then follows a methodically planned examination of
the scene of the crime as a whole, which will be the basis for the report of the
investigation. It starts at a suitable point, as follows, everything is
inspected in such a way and in such an order that nothing is forgotten. First
comes the entrance, doors, and lock arrangements. Then a description of the
room as a whole without going into detail. The length, width, height to ceiling
windows, doors, floor covering, paint on walls and ceiling, color of wallpaper,
lighting conditions, and other features should be described. Next, the room is
described in detail and investigated in a certain order beginning from the
entrance or from the place of death.
‘Everything must
be examined and described as a coherent whole.’
For example, if a
writing desk is examined, a description focuses on the nearby parts of the
floor and walls and also of the surface of the floor under the piece of
furniture. It is best for the ceiling to be described and examined last and as
a whole.
The notes made at
the scene of a crime must not under any circumstances be thrown away but should
be placed in the file and kept with the records. Experience shows that such
rough notes may be of great importance at some future date if the investigator is
required to prove that the examination of certain details was not omitted. It
is convenient to develop and preserve finger- and palm prints at the same time.
A final important
step prior to sketching the scene of the crime is measurement. It is important
to do this earlier, but this may not have been possible because of a risk that
those who did the measuring might have destroyed evidence not yet discovered or
produced fresh and misleading clues. One method that can be used is to have a
preliminary sketch made as early as possible. Gradually, as the investigation
proceeds and before each object is moved, measurements are made and recorded on
the sketch. This method is inconvenient because the measuring cannot be done as
systematically as is desirable. Under such conditions, even experienced
sketchers can easily forget important measurements.
In the case of a
shooting at the scene of the crime, it is necessary to look for weapons,
cartridges, cartridge cases, and bullets. If a weapon is found, it is
photographed at that spot, and a chalk line is drawn around it before it is
moved. Fingerprints are recorded before the weapon is examined. In cases of
presumed suicide, it is necessary to check whether the weapon lies in a place
to which it might have dropped or slid. The base on which the weapon lies
should always be examined. A dropped or thrown weapon generally leaves a mark,
e.g., a scratch or dent in the furniture or floor, and the absence of such marks
should be considered suspicious. When cartridge cases are found, their position
should be noted in the report, on the sketch, and on the envelope into which
they are then placed. Bullets and bullet holes are examined. The place from
which the shot was fired can be determined quite accurately from the direction
of the bullet penetration — a string is stretched along the calculated path of
the bullet. The reconstruction is photographed. A bullet that has buried itself in
a wall is cut out, but great care must be used so that the tool used does not
touch the bullet. In cases of suicide, the shooter may fire one or more trial
shots before firing the actual suicide shot.
The following is a
list of certain details that should be examined where appropriate. It consists
partly of items of a changeable nature, they should be done immediately or as
soon as possible, especially those easily forgotten or passed over even by an
experienced investigator:
Stairs, passages, and entries to the scene, together with streets,
passages, and yards in the immediate vicinity. Are
there bloodstains or fingerprints on railings? Are objects present that the criminal has dropped or
thrown away? Is there illumination? Do trash cans
contain evidence? If there is an elevator, the elevator shaft should be examined. Outer doors. Are
they bolted and/or locked? Are there marks of breaking in? Does the doorbell work? Windows. Are
they bolted? What is the position of the window catch? Are there marks of breaking in or a possibility of seeing in? What is
the position of curtains and blinds? Are there indications of marks
outside the windows? Mailbox. What is the date
on mail or papers; are they in the right order of time? Other papers and mail,
daily milk supplies, etc. at the scene of the crime. Are there date marks? Have
letters been opened or do papers give the impression of having been read? What is the number of milk bottles? Inside doors. Are they bolted and/or locked; on which side is the
key? Hall, entrance. Are clothing and
objects present that do not belong to the place and residents there, especially
outer garments, headgear, scarves, gloves, galoshes, umbrellas? Lighting. Which lamps were on when the crime was discovered? What
are the electric meter readings? Television, stereos. Have they been
left on or off? Heating conditions. Is there any fire
or embers in fireplaces or any remaining heat? Do not forget to examine ash and
burned residues and the setting on the thermostat. Cooking conditions. Is the oven or stove on or is there any remaining
heat? Was food or drink preparation in progress? In what condition is the food
in the refrigerator? Odors. Gas; gunpowder; strong tobacco fumes;
alcohol; perfume? Clocks and watches. Are they running
and showing the right time? When did they stop? Is there a time set on the
alarm clock? Signs of a
party. How many bottles are present; are there
labels on them and what are their contents (not always same as label)? Are
seals or corks on or in the bottles? How many glasses or cups of different
kinds are present; what is their contents and is there a residue or odor in
them? Has liquor been spilled or objects overturned? Have cigarette butts and
match sticks been thrown on the table or floor? How many persons was the table
set for and what dishes? Are there any fingerprints? Contents of ashtrays. Are there remains of smoked tobacco or brand marks on
cigarette butts? How were they extinguished? Are there marks of lipstick,
burned matches? Remember that DNA and fingerprints may be present on cigarette
butts. Drawers and
compartments in writing desks, cabinets, or other furniture. Are they shut and locked?
In which drawer is the key? Have drawers been pulled out or taken away or have
objects been taken out of them? Are there signs of disorder such as might
result from a hurried search? Are cash, bank books, and objects of value exposed
in a conspicuous or easily detected place? Wastepaper baskets, trash cans. Has any object been thrown there by the criminal? Are
there torn letters? Kitchen, bathroom, toilet. Are towels, rags,
and like objects damp or do they show bloodstains? Are
there bloodstains on counter, bath, sink, toilet, or buckets? Are there objects
or suspicious liquids in the water-trap or toilet? Are there fingerprints on
any used paper? Damage to ceiling, walls, and furniture. Investigate
how it could have occurred in connection with the crime; marks of plaster or
paint soon disappear from the floor due to trampling. Garments taken off. At what places and in what order, beginning from top,
were they taken off? Are they turned right side out or inside out? Are they
properly hung up or in disorder? General disorder. Is this typical of
violent happenings or a struggle; can it result from lack of cleaning up over a
long period, or incidentally, for example, in carrying out ordinary household
operations, etc. Shooting. The investigating
officer should be able to account for the actual number of bullets fired
together with a corresponding number of cartridge cases, or give a good
explanation of why they are not found or cannot be found in the correct number
(consider the possibility of a cartridge case getting caught up in the clothes of
the dead person and not being found before the autopsy). Hanging and strangling. Quickly confirm whether the cord used was taken from
the scene or locality. Suicide note. Is it in the
handwriting of the victim? Has the writing instrument been found? Has indented
writing come through onto the paper underneath? Is there more than one note?
Are there fingerprints of persons other than the deceased?
Some of the places most often forgotten by the
investigating police officer are locations above appliances and high furniture
or between these and the wall, behind books in a bookcase, among bedclothes in
a bed, behind heating elements, and on high shelves in wardrobe, pantry, and
kitchen cupboards. Compost heaps, manure heaps are very
convenient for concealing objects without distinct signs of digging.
In cases of
serious crime when the investigation has been concluded, the scene of the crime
must be kept intact until the final report has been written and read through by
the superior officer and the prosecutor, recovered evidence has been examined, and
the postmortem examination has been completed. The material recovered for
examination has got value as evidence and should be preserved even after the
criminal has been tried. There may be a review of the case, perhaps several
years later, and the evidence may then need to be produced.
Acknowledgements:
The Police Department;
https://www.politie.nl/mijnbuurt/politiebureaus/05/burgwallen.html and a Chief Inspector – Mr. Erik Akerboom
©
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