Flashcards in Criminal Inv-Chapter 11, Arson,Bombings and Hate Crimes Deck (33):
fires set by arsonists and explosives placed to damage property and ill or inflict injury on people are
crimes against both person and property
who defined arson as the malicious and willful burning of the house or outhouse of another man
18 century British jurist Sir William Blackstone, in his Commentaries on the Laws of England
corpus delicti in arson case requires
burning be the result of a criminal agency
that there be actual burning, a consuming type fire
Facts that must be proved in any prosecution for arson are
1. Fire occured- a burning, a charring
2. burning was not accidental; result of criminal agency
3. person who appears as a defendant in court in an arson case is identified as the person who set the fire or caused it
explosives are used
people are present at the site or are placed in danger
FBI uniform crime report on arson in 2008
62,807 arson cases in US
43.4 % Involving structures
28.9% mobile property
27.7% other types property; crops,timber,fences
average dollar loss $16,000
24.1 per every one hundred thousand inhibitants
suspicious fire concept
1.seek evidence to prove the fire was natural or accidental
2. seek evidence to eliminate all possible caused except incendiarism. (evaluate possibilites ofperson smoking in bed, spontaneous compbustions, electrical storms, space heater
3. seek evidence that prove fire was incendiary origin
rational motivation fire
based on hate, profit, desire to conceal a crime
irrationally motivated fires
are pathological fire setters
are set because of some dispute.
They have emotional problems.
Religious, racial and political disputes may be involved. The identity of the arsonists or incendiary is not as apparent in these disputes, suspects may be identified in the opposition group involved in the dispute.
these fire setters are not difficult to expose once hate as been eliminated as motivation.
for -profit fire setters- inquiry about company insuring building and contents, insurance and record of policyholder.
obsessional impulse to set fires or a preference for arson as an instrument of damage
"firebugs", who terrorize entire neighborhoods by setting fires.
pathological fire setter
does not have any relationship with victim or place of burning.
a "pyro" fore is similiar to a "psycho" murder case in this respect
in terms of ignitablility, rate of heat release
rapid development of the fire that occurs when volume of active fire becomes a significant portion of room volume.
flashover- uninvolved combustibles in a a room suddenly ignite.
factors that influence fire patterns in outdoor fires are
wind and terrain
major difference between an accidential fire and an incendiary fire is
accidental fires frequently burn themselves out becuase of lack of proper ventilation or combustible material
or called the plant
where a fire was ignited is classified as the
place of origin
often used to spead fires from point of ignition
trailers- can be considered a secondary incendiary device. carrying fire from original place of ignition to other parts of room or building
an examination and search by firefighters for hidden flames
passive headspace concentration method
popular method for seperating flammable and combustible liquid residues from fire debris
addition of coded microparticles or taggants to explosives during their manufacture. taggants survive detonation, can be recovered and decoded`
when arson cases are prosecuted, these factors are important
motive and opportunity factors
Best-case scenario in arson investigation is when the investigator arrives at fire scene while ________
fire is still in progress. Investigator can interview on-scene witnesses and observe fire.
natural materials such as wood and grass typically produce what color? and petroleum-based products have ___?
white smoke and petroleum is black smoke
Reconstruction of a fire scene requires the investigator to secure data on, three things?
how fire started
how it burned
whether it was accelerated
Primary concern with the pattern of a fire:
how it was ignited
point of origin
source and direction of its burning
detectors of flammable vapors, "sniffers". operates on the _____ ____ principle
_________ _______ support the work of fire scene searches by recovering flammable fluids from fire rubble, (wood, cloth and paper)