In regard to choice of weapons, handguns are used more
often than rifles or shotguns. Traditionally, the preferred
method used by women was an overdose of drugs. While most suicidal gunshot wounds are contact wounds,
a small (1 to 3%) but significant number are of intermediate range. Most people who commit suicide with a firearm, like
suicide victims in general, do not leave a note; notes are only left in
approximately 25% of all suicides. Therefore, the absence of a note does not
indicate that a death was not a suicide. In firearm deaths, the individual may attempt to make
the suicide appear to be an accident. This generally takes two forms. The first
of these is the “gun cleaning accident.” The individual is found dead of a
gunshot wound with gun cleaning equipment neatly laid out beside them. The
proof that one is dealing with a suicide and not an accident is usually the
nature of the wound — contact. An individual does not place a gun against the
head or chest and then pull the trigger in an attempt to clean the weapon. The
author has never seen a death caused by a self-inflicted wound incurred while
“cleaning” a weapon that he believed to truly be an accident. In firearm
deaths, the individual may attempt to make the suicide appear to be an
accident. This generally takes two forms. The first of these is the “gun
cleaning accident.” The individual is found dead of a gunshot wound with gun
cleaning equipment neatly laid out beside them. The proof that one is dealing
with a suicide and not an accident is usually the nature of the wound —
contact. An individual does not place a gun against the head or chest and then
pull the trigger in an attempt to clean the weapon. The author has never seen a
death caused by a self-inflicted wound incurred while “cleaning” a weapon that
he believed to truly be an accident. In firearm deaths, the individual may
attempt to make the suicide appear to be an accident. This generally takes two
forms. The first of these is the “gun cleaning accident.” The individual is
found dead of a gunshot wound with gun cleaning equipment neatly laid out
beside them. The proof that one is dealing with a suicide and not an accident
is usually the nature of the wound — contact. An individual does not place a
gun against the head or chest and then pull the trigger in an attempt to clean
the weapon. The author has never seen a death caused by a self-inflicted wound
incurred while “cleaning” a weapon that he believed to truly be an accident. The
second way an individual may attempt to make a suicide appear as an accident is
the “hunting accident.” Here the individual goes hunting and is subsequently
found dead of a gunshot wound. Again, the nature of the wound (contact) will
indicate that one is dealing with a suicide. Self-inflicted wounds to the chest and abdomen from
rifles and shotguns in individuals standing at the time they shoot themselves
often have a characteristic trajectory that acts as confirmatory evidence that
one is dealing with a suicide. Because the victim is “hunched” over the gun,
the trajectory of the bullet or pellets is downward and not the upward path one
would expect. Thus, the trajectory of the bullet or pellets through the body
will be downward and right to left. If the individual uses the left hand to
fire the weapon, grasping the muzzle with the right hand, they will rotate the body
clockwise, and the path of the bullet or pellets, while still downward, will be
from left to right. As virtually all hunting is done with long arms, the
trajectory of the bullet and pellets through the body is important in “hunting
accident” cases. The location of the self-inflicted wound varies depending on
the type of the weapon, the sex of the victim, and whether the victim is right-
or left-handed. When individuals shoot
themselves, they do not necessarily hold the weapon the same way they would if
they were firing the weapon at a target. Commonly, they will hold a handgun
with the fingers wrapped around the back of the butt, using the thumb to
depress the trigger, firing the weapon. Even if there is no visible powder or
soot deposition on the hand, analysis for primer residues is often positive. In the head, the most common site for a handgun
entrance wound is the temple. Although most right-handed individuals shoot
themselves in the right temple and left-handed individuals in the left temple,
this pattern is not absolute. There are
people, however, who will be different and shoot themselves on the top of the
head, in the ear, in the eye, etc. There has been seen a number of
unquestionable cases of suicide in which individuals have shot themselves in
the back of the head. These have occurred not only with handguns but also with
rifles and shotguns. The fact that a wound is in an unusual location does not
necessarily mean that it cannot be self-inflicted, though it is wise to always
start with the presumption that such a case is a homicide. In suicides with
long arms (rifles and shotguns), just as with handguns, the preferred sites are
the head, chest, and abdomen, in that order. There is, however, very little
difference in the percentage of head wounds between the sexes. The percentage
of people shooting themselves in the head with rifles and shotguns is not as
great as with handguns. This may be due to the fearsome reputation of these
weapons. People do not mind shooting themselves in the head but do not want to
“blow their head off.” Some individuals construct
devices to shoot themselves at a distance or in unusual areas of the body.
These devices may be as simple as clamping a gun to a chair and running a
string through a pulley to the trigger, to elaborate devices employing electric
motors and timers. In deaths due to long arms, just
as in those with handguns, one should examine the hands for the presence of
soot as well as test for primer residues. If soot is present, it will be on the
hand used to steady the muzzle against the body and is due to blowback from the
muzzle. The area involved is the thumb, index finger, and connecting web of
skin. Suicides in which multiple
gunshot wounds are present are uncommon, but not rare. These wounds may involve
only one area, e.g., the head, or multiple areas, such as the head and chest.
Multiple gunshot wounds confined exclusively to the head are the least common,
whereas those of the chest are the most common. A lack of knowledge of anatomy,
flinching at the time the trigger is pulled, defective ammunition, ammunition
of the wrong caliber, or just missing a vital organ, account for such multiple
wounds. Wounds that may appear to be fatal on initial examination may not be so
on autopsy. Thus, in an individual who shot himself four times in the chest and
once in the head with a .22-caliber pistol, one would assume that the head
wound was the fatal shot. However, the autopsy revealed that the bullet
flattened out against the frontal bone, and death was due to one of the four
gunshot wounds of the chest, with one bullet going through the heart.
An individual, wishing to make absolutely sure he
would die, placed a noose around his neck, tied one end to a support, and then
shot himself in the head. The bullet itself would have been fatal, but as he
collapsed, he suspended himself by the neck. If he had survived any length of time
from the gunshot wound, he would have died of hanging.
The most unusual case of this kind the author has seen
was a young woman who shot herself in the chest with a revolver while standing
at the end of a pier. She was seen to collapse immediately after the discharge
of the weapon, with the gun falling onto the pier, and the woman tumbling
backward into the harbor. The body was recovered a few hours later. At autopsy,
she was found to have a through-and-through gunshot wound of the left breast.
The bullet did not enter the chest cavity and did not injure any major blood
vessel. The cause of death was drowning.
Articles and lecturers commonly make mention of the
deposition of highvelocity blood droplets (backspatter) on the back of the hand
used to fire a handgun in cases of suicide. Such a spray may in fact be present
not only on the hand firing the gun, but also on the back of the hand used to
steady the muzzle. Misclassification of suicides as accidents is more common in
coroner systems than medical examiner systems. Guns do not discharge by themselves while being held.
Someone has to pull the trigger. A gun does not “magically” go off. The only
exception to such a ruling of homicide would be if the individual holding the
weapon was a very young child (? 8–9 years or younger) who did not realize the consequences
of pulling the trigger. Unfortunately, in our society, “children” of 10, 11,
and 12 yrs of age are committing murder for money, drugs, to gain a reputation,
for gang initiation or out of plain “meanness.” Twelve- and thirteen-year-old
contract killers exist. Handguns that will discharge on
dropping fall into five general categories:
1. Single-action revolvers
2. Old or cheaply made double-action revolvers
3. Derringers
4. Striker-operated automatics
5. Certain external hammer automatics
Unlike double-action revolvers, the hammer of a
singleaction revolver must be cocked manually before pressure on the trigger
will release the hammer. The firing pin in this weapon may be either integral
with the hammer or in the frame separate from the hammer. Whatever the case, single-action
revolvers have traditionally been dangerous in that, when the hammer is down,
the firing pin projects through the breech face, resting on the primer of the
cartridge aligned with the barrel. A slam-fire is the discharge of a firearm upon closing
the action without the pulling of the trigger. They may be caused by a
protruding or overly sensitive primer; a firing pin that protrudes because it
is either stuck or failed to retract; a weak, broken or absent firing pin
spring; inadequate headspace. Slam-fires are most commonly associated with
self-loading military rifles in which civilian ammunition is being used as
civilian primers are generally more sensitive to detonation than military
primers.
Suicide is not acceptable in society, and thus there
is often strenuous objection to the ruling of a death as suicide. The
objections can vary from the naive “he wouldn’t do such a thing” to a
sophisticated and complicated explanation for why a weapon “accidentally”
discharged. These objections can be motivated by guilt, religious belief,
social pressure, or avarice. Individuals may contest the
ruling of suicide by stating that the deceased, though previously depressed,
had recently been happy. In fact, it is not uncommon for individuals who have
decided to commit suicide to show an elevation in mood before the suicide.
After all, they have solved their problems—they are going to kill themselves.
Acknowledgements:
The Police Department;
www.politie.nl and a Chief Inspector – Mr. Erik
Akerboom ©
Bibliography:
1. Criminal
Investigations – Crime Scene Investigation.2000
2. Forensic
Science.2006
3. Techniques
of Crime Scene Investigation.2012
4. Forensics
Pathology.2001
5. Pathology.2005
6. Forensic
DNA Technology (Lewis Publishers,New York, 1991).
7. The
Examination and Typing of Bloodstains in the Crime Laboratory (U.S. Department
of Justice, Washington, D.C., 1971).
8. „A
Short History of the Polymerase Chain Reaction". PCR Protocols. Methods in
Molecular Biology.
9. Molecular
Cloning: A Laboratory Manual (3rd ed.). Cold Spring Harbor,N.Y.: Cold Spring
Harbor Laboratory Press.2001
10. "Antibodies
as Thermolabile Switches: High Temperature Triggering for the Polymerase Chain
Reaction". Bio/Technology.1994
11. Forensic
Science Handbook, vol. III (Regents/Prentice Hall, Englewood Cliffs, NJ, 1993).
12. "Thermostable
DNA Polymerases for a Wide Spectrum of Applications: Comparison of a Robust
Hybrid TopoTaq to other enzymes". In Kieleczawa J. DNA Sequencing II:
Optimizing Preparation and Cleanup. Jones and Bartlett. 2006
13. Nielsen
B, et al., Acute and adaptive responses in humans to exercise in a warm, humid
environment, Eur J Physiol 1997
14. Molnar
GW, Survival of hypothermia by men immersed in the ocean. JAMA 1946
15. Paton
BC, Accidental hypothermia. Pharmacol Ther 1983
16. Simpson
K, Exposure to cold-starvation and neglect, in Simpson K (Ed): Modem Trends in
Forensic Medicine. St Louis, MO, Mosby Co, 1953.
17. Fitzgerald
FT, Hypoglycemia and accidental hypothermia in an alcoholic population. West J
Med 1980
18. Stoner
HB et al., Metabolic aspects of hypothermia in the elderly. Clin Sci 1980
19.
MacGregor DC et al., The effects of ether, ethanol, propanol and butanol on
tolerance to deep hypothermia. Dis Chest 1966
20. Cooper
KE, Hunter AR, and Keatinge WR, Accidental hypothermia. Int Anesthesia Clin
1964
21. Keatinge
WR. The effects of subcutaneous fat and of previous exposure to cold on the
body temperature, peripheral blood flow and metabolic rate of men in cold
water. J Physiol 1960
22. Sloan
REG and Keatinge WR, Cooling rates of young people swimming in cold water. J
Appl Physiol 1973
23. Keatinge
WR, Role of cold and immersion accidents. In Adam JM (Ed) Hypothermia – Ashore
and Afloat. 1981, Chapter 4, Aberdeen Univ. Press, GB.
24. Keatinge
WR and Evans M, The respiratory and cardiovascular responses to immersion in
cold and warm water. QJ Exp Physiol 1961
25. Keatinge
WR and Nadel JA, Immediate respiratory response to sudden cooling of the skin.
J Appl Physiol 1965
26. Golden
F. St C. and Hurvey GR, The “After Drop” and death after rescue from immersion
in cold water. In Adam JM (Ed). Hypothermia – Ashore and Afloat, Chapter 5,
Aberdeen Univ. Press, GB 1981.
27. Burton
AC and Bazett HC, Study of average temperature of tissue, of exchange of heat
and vasomotor responses in man by means of bath coloremeter. Am J Physiol 1936
28. Adam
JM, Cold Weather: Its characteristics, dangers and assessment, In Adam JM (Ed).
Hypothermia – Ashore and Afloat, Aberdeen Univ. Press, GB1981.
29. Modell
JH and Davis JH, Electrolyte changes in human drowning victims. Anesthesiology
1969
30. Bolte
RG, et al., The use of extracorporeal rewarming in a child submerged for 66
minutes. JAMA 1988
31. Ornato
JP, The resuscitation of near-drowning victims. JAMA 1986
32. Conn
AW and Barker CA: Fresh water drowning and near-drowning — An update.1984;
33. Reh
H, On the early postmortem course of “washerwoman’s skin at the fingertips.” Z
Rechtsmed 1984;
34. Gonzales
TA, Vance M, Helpern M, Legal Medicine and Toxicology. New York,
Appleton-Century Co, 1937.
35. Peabody
AJ, Diatoms and drowning – A review, Med Sci Law 1980
36. Foged
N, Diatoms and drowning — Once more.Forens Sci Int 1983
37. "Microscale
chaotic advection enables robust convective DNA replication.". Analytical
Chemistry. 2013
38. Sourcebook
in Forensic Serology, Immunology, and Biochemistry (U.S. Department of Justice,
National Institute of Justice, Washington, D.C.,1983).
39. C.
A. Villee et al., Biology (Saunders College Publishing, Philadelphia, 2nd
ed.,1989).
40. Molecular
Biology of the Gene (Benjamin/Cummings Publishing Company, Menlo Park, CA, 4th
ed., 1987).
41. Molecular
Evolutionary Genetics (Plenum Press, New York,1985).
42. Human
Physiology. An Integrate. 2016
43. Dumas
JL and Walker N, Bilateral scapular fractures secondary to electrical shock.
Arch. Orthopaed & Trauma Surg, 1992; 111(5)
44. Stueland
DT, et al., Bilateral humeral fractures from electrically induced muscular
spasm. J. of Emerg. Med. 1989
45.
Shaheen MA and Sabet NA, Bilateral simultaneous fracture of the femoral neck
following electrical shock. Injury. 1984
46.
Rajam KH, et al., Fracture of vertebral bodies caused by accidental electric
shock. J. Indian Med Assoc. 1976
47. Wright
RK, Broisz HG, and Shuman M, The investigation of electrical injuries and
deaths. Presented at the meeting of the American Academy of Forensic Science,
Reno, NV, February 2000.
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