8/12/2019 Converting Scene Data Into Event Sequence
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MSC-I Roll No.12
Niranjana.S.Karandikar Page 1
Converting Scene Data Into Event Sequence
Crime scene reconstruction is an investigatory technique in
which evidence is gathered,
organized, and analyzed to recreate the precise sequence of
events that occurred during
the course of a crime. The following are the stages of Crime
Scene Reconstruction
1. Data Collection: All information or documentation information
obtained at the crimescene, from the victim, or witnesses. Data
including condition of evidence, obviouspatterns and impressions,
condition of the victim, etc., are reviewed, organized, and
studied.
2. Conjecture: Before any detailed analysis of evidence is
obtained, a possibleexplanation or conjecture of the events
involved in a criminal act may be done, but it
must not become the only explanation being considered at this
stage. It is only a
possibility. There may be several more possible explanations
too.
3. Hypothesis Formulation: Further accumulation of data is based
on the examinationof physical evidence and the continuing
investigation. Scene examination and
inspection of the physical evidence must be done. Scene and
evidence examination
includes interpretation of patterned evidences and analysis of
trace evidences.4. Testing: Once a hypothesis is formulated,
further testing must be done to confirm or
disprove the hypothesis.
Once the hypothesis has been tested a reconstruction is made
based on the data
collected and the hypothesis.
In India, police accident reports are often the main source of
data for accident investigations.
These reports usually contain information on traffic conditions,
vehicle performance, road
environment, driver characteristics, casualty demographics, and
injury severity level. Whencomparing police reports with hospital
records, the degree of the under-reporting of road
casualties has been found to be quite significant. Casualty
demographics, time of injury, hospital
admission, mode of transport, vehicle class, and car occupancy
are all contributory factors to thereporting rate in police
accident records. Fatal accidents are normally assumed to be
reported in
full. However, the degree of under-reporting is greater for less
seriously injured casualties. The
quality of police accident reports has also been examined in
relation to the accuracy of accident
attributes, vehicle performance, driver characteristics, and
accident causes.The vehicle can hold the clues to solving cases
related to accident analysis. A general
methodology for examining an accident vehicle and road accidents
for the crime scene
investigator is also summarized through a flow chart as
follows.
8/12/2019 Converting Scene Data Into Event Sequence
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MSC-I Roll No.12
Niranjana.S.Karandikar Page 3
Case StudyIn this case, it was reported that on 30
thApril 2007, a dead body of a man aged 27 years was
found on the middle seat of a Mahindra Bolero vehicle lying in a
field about 50 feet away fromthe road near the village Sanwalpura
as an FIR in Khatu Shaymaji Police station, Rajasthan,
India.
Forensic FindingsAfter the crime scene was assessed, the
following were the findings made by the mobile
forensics team:-
The Vehicle:
1. A silver grey colored Mahindra Bolero Turbo DI vehicle
bearing registration number RJ05 UA 0116 was located at the Police
Station Khatu Shyamji and was examined.
2. Fresh scratches and dents were detected on the front left
side bonnet of the vehicle. Frontheadlight was broken (Photograph
1).
3. Wind screen was found missing and some windows were also
broken.4.
Dent & scratches were also found on the front right side top
corner of the vehicle.5. Rear side left tyre was burst (Photograph
2).
Other/Foreign smears:
No foreign smear/paint was observed at the location of the
scratched and dented portion of
the vehicle, which can be seen in Photograph 1.
Dead Body:
1. The body was lying at the middle seat of the vehicle having a
badly injured head.2.
The front lateral part of the head was badly damaged (Photograph
3).3. Other parts of the body did not have any serious
injuries.
Blood spots and the window of the right (passenger side) rear
door:
It was observed that the maximum pool of blood and blood
splashes were detected at the
middle window (Photographs 4a to 4e) and on the ceiling and roof
of the rear right side
portion of the vehicle.
Inside the vehicle:
Maximum blood was detected in the middle (second row) of
seats.
At the spot:
1. There was a "Nallah" of width 9 feet and depth of about 3-4
feet between the road and thefield.
2. Broken windscreen glass and pieces of tire guard were also
detected at the spot(Photograph 5).
