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Arson is the act of willfully and deliberately setting
fire
Fire is the rapid oxidation of a fuel in the exothermic chemical process of combustion, releasing heat, light, and various reaction Product (chemistry), products.
Flames, the most visible portion of the fire, are produced in the combustion re ...
to or charring
property
Property is a system of rights that gives people legal control of valuable things, and also refers to the valuable things themselves. Depending on the nature of the property, an owner of property may have the right to consume, alter, share, re ...
. Although the act of arson typically involves
building
A building or edifice is an enclosed Structure#Load-bearing, structure with a roof, walls and window, windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, a ...
s, the term can also refer to the intentional
burning
Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combust ...
of other things, such as
motor vehicle
A motor vehicle, also known as a motorized vehicle, automotive vehicle, automobile, or road vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on railway track, rails (such as trains or trams), does not fly (such ...
s,
watercraft, or
forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...
s. The crime is typically classified as a
felony
A felony is traditionally considered a crime of high seriousness, whereas a misdemeanor is regarded as less serious. The term "felony" originated from English common law (from the French medieval word "''félonie''") to describe an offense that r ...
, with instances involving risk to human life or property carrying a stricter penalty. Arson that results in death can be further prosecuted as
manslaughter
Manslaughter is a common law legal term for homicide considered by law as less culpable than murder. The distinction between murder and manslaughter is sometimes said to have first been made by the ancient Athenian lawmaker Draco in the 7th ce ...
or
murder
Murder is the unlawful killing of another human without justification (jurisprudence), justification or valid excuse (legal), excuse committed with the necessary Intention (criminal law), intention as defined by the law in a specific jurisd ...
. A common motive for arson is to commit
insurance fraud
Insurance fraud is any intentional act committed to deceive or mislead an insurance company during the application or claims process, or the wrongful denial of a legitimate claim by an insurance company. It occurs when a claimant knowingly attem ...
.
In such cases, a person destroys their own property by burning it and then lies about the cause in order to collect against their
insurance policy
In insurance, the insurance policy is a contract (generally a standard form contract) between the insurer and the policyholder, which determines the claim (legal), claims which the insurer is law, legally required to pay. In exchange for an initial ...
. Arson is also often committed to conceal another crime, such as murder or burglary.
A person who commits arson is referred to as an arsonist, or a serial arsonist if the person has committed arson several times. Arsonists normally use an
accelerant (such as
gasoline
Gasoline ( North American English) or petrol ( Commonwealth English) is a petrochemical product characterized as a transparent, yellowish, and flammable liquid normally used as a fuel for spark-ignited internal combustion engines. When for ...
or
kerosene
Kerosene, or paraffin, is a combustibility, combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in Aviation fuel, aviation as well as households. Its name derives from the Greek (''kērós'') meaning " ...
) to ignite, propel, and direct fires, and the
detection and identification of ignitable liquid residues is an important part of fire investigations.
Pyromania is an
impulse control disorder characterized by the pathological setting of fires.
Most acts of arson are not committed by pyromaniacs.
Etymology
The term derives from
Law French ''arsoun'' (late 13th century), from
Old French
Old French (, , ; ) was the language spoken in most of the northern half of France approximately between the late 8th , from
-4; we might wonder whether there's a point at which it's appropriate to talk of the beginnings of French, that is, when it wa ...
, from
"a burning," (accusative case">acc.) from the verb , "to burn."
The Old English">Late Latin "a burning," (accusative case">acc.) from the verb , "to burn."
The Old English term was , lit. "burning"; and Edward Coke has indictment of ''burning'' (1640). ''Arsonist'' is from 1864.
English common law
English Common Law defines arson as "the malicious burning of the dwelling of another."
This definition has four elements:
;Malicious: For purposes of common law arson, "malicious" refers to intention of starting the fire. Fires can be started on purpose or by accident. In either case, there is legal precedent to charge the guilty person with arson whether their intention was to start a fire or not. "Malicious" in this case is describing the intention of the arsonist as ill-intentioned and intending to cause harm or death.
;Burning: According to common law, charring to any part of a dwelling was sufficient to satisfy this element. No significant amount of damage to the dwelling was required. Any injury or damage to the structure caused by exposure to heat or flame is sufficient.
;Of the dwelling: 'Dwelling' refers to a place of residence. The destruction of an unoccupied building was not considered arson: "... since arson protected habitation, the burning of an unoccupied house did not constitute arson." At common law, a structure did not become a residence until the first occupants had moved in, and ceased to be a dwelling if the occupants abandoned the premises with no intention of resuming their residency. Dwelling includes structures and outbuildings within the curtilage.
[Boyce & Perkins, Criminal Law, 3rd ed. (1992) at 281.] Dwellings were not limited to houses. A barn could be the subject of arson if occupied as a dwelling.
;Of another: Burning one's own dwelling does not constitute common law arson, even if the purpose was to collect insurance, because "it was generally assumed in early England that one had the legal right to destroy his own property in any manner he chose". Moreover, for purposes of common law arson, possession or occupancy rather than title determines whose dwelling the structure is.
Thus a tenant who sets fire to his rented house would not be guilty of common law arson,
while the landlord who set fire to a rented dwelling house would be guilty.
Degrees
Many U.S. state legal systems and the legal systems of several other countries divide arson into degrees, depending sometimes on the value of the property but more commonly on its use and whether the crime was committed in the day or night.
*First-degree arson – Burning an occupied structure such as a school or a place where people are normally present
*Second-degree arson – Burning an unoccupied building such as an empty barn or an unoccupied house or other structure in order to claim insurance on such property
*Third-degree arson – Burning an abandoned building or an abandoned area, such as a field,
forest
A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...
or woods.
Many statutes vary the degree of the crime according to the criminal intent of the accused. Some US states use other degrees of arson, such as "fourth" and "fifth" degree, while some states do not categorize arson by any degree. For example, in the state of
Tennessee
Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...
, arson is categorized as "arson" and "aggravated arson."
Insurance fraud
A common motive for arson is to commit insurance fraud. In such cases, a person destroys their own property by burning it and then lies about the cause in order to collect against their
insurance policy
In insurance, the insurance policy is a contract (generally a standard form contract) between the insurer and the policyholder, which determines the claim (legal), claims which the insurer is law, legally required to pay. In exchange for an initial ...
.
An example of insurance fraud being the motivating factor for an act of arson is the case fo
Operation Firebird A married couple and four co-conspirators were arrested and convicted with arson and insurance fraud after a string of home, business, and warehouse fires which took place between 2014 and 2018 were exposed as acts of arson. Using chicken left in boiling frying oil, the convicted criminals would make fire seem like a cooking accident. Then, the group committed insurance fraud by filing insurance claims for the cost of the building, as well as smoke-damaged goods to claim fire damages for insurance payouts. The group's scheme claimed a reported $4 million and ended when authorities were tipped off as to where the location of the next planned incident would take place. Police then performed an investigation dubbe
Operation Firebirdwith the San Jose Fire Department. According to
2019 Press Releasefrom the
California Department of Insurance
The California Department of Insurance (CDI), established in 1868, is the agency charged with overseeing insurance regulations, enforcing statutes mandating consumer protections, educating consumers, and fostering the stability of insurance mark ...
, Tyler and Kim Chen, Ha Nguyen, Sandy Ngo, Duyen Pham, and Trang Huynh were all convicted of various degrees of arson and insurance fraud.
Tyler Chen was convicted of five separate counts of arson and two separate counts of insurance fraud in Santa Clara County in 2018. Tyler Chen's wife, Kim Chen, was convicted of two counts of insurance fraud in Santa Clara county.
By region
United States
In the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, the
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
elements of arson are often varied in different jurisdictions. For example, the element of "dwelling" is no longer required in most states, and arson occurs by the burning of any real property without consent or with unlawful intent. Arson is prosecuted with attention to degree of severity
in the alleged offense. First degree arson generally occurs when people are harmed or killed in the course of the fire, while second degree arson occurs when significant destruction of property occurs.
While usually a
felony
A felony is traditionally considered a crime of high seriousness, whereas a misdemeanor is regarded as less serious. The term "felony" originated from English common law (from the French medieval word "''félonie''") to describe an offense that r ...
, arson may also be prosecuted as a
misdemeanor
A misdemeanor (American English, spelled misdemeanour elsewhere) is any "lesser" criminal act in some common law legal systems. Misdemeanors are generally punished less severely than more serious felonies, but theoretically more so than admi ...
,
"
criminal mischief", or "
destruction of property."
Burglary also occurs, if the arson involved a "breaking and entering". A person may be
sentenced to death if arson occurred as a method of homicide, as was the case in
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
of
Raymond Lee Oyler and in
Texas
Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...
of
Cameron Todd Willingham.
After the
Great Chicago Fire in 1871, the United States started a
National Fire Prevention Week in order to educate the people on ways to prevent fires, minimize their damages, and hopefully drastically decrease casualties. Fire

Prevention Week campaigns includes various information on safe cooking practices pertaining to grilling, microwaving, and cooking on a stove.
During
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
arson was a much higher concern in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. There was a severe lack of
firefighters due to the fact that most of the men were overseas to fight the war. There were few men left behind to help combat forest fires. For example, during WW II in Eldora, Iowa, a fire chief reported that his regular membership shrank from 21 to 9 men and their fire fighting force recruited retired members and new members to fill the missing positions during the war. Although there were few attempts to burn U.S. forests, it continued to be a big concern due to the potential detrimental effects. This concern for arson attempts led to the rise of
Smokey Bear who was the face of fire prevention and fire safety measures. Although the intention of Smokey Bear's persona is to encourage
fire safety
Fire safety is the set of practices intended to reduce destruction caused by fire. Fire safety measures include those that are intended to prevent wikt:ignition, the ignition of an uncontrolled fire and those that are used to limit the spread a ...
, Smokey shares a message of fire prevention which includes accidental fires that can sometimes be legally charged as arson.
In New York, arson is charged in five degrees. Arson in the first degree is a Class A-1 felony and requires the intent to burn the building with a person inside using an explosive incendiary device. In New York, the criminal charge of arson includes a maximum sentence of 25 years to life.
In California, a conviction for arson of property that is not one's own is a felony punishable by up to three years in state prison. Aggravated arson, which carries the most severe punishment for arson, is punishable by 10 years to life in state prison. A well-known example of arson which took place in California is the
Esperanza Fire. Raymond Lee Oyler was ultimately convicted of murder and sentenced to death for a 2006 fire in southern California that led to the deaths of five U.S. Forest Service firefighters; he was the first U.S. citizen to receive such a conviction and penalty for wildfire arson.
Some states, such as California, prosecute the lesser offense of
reckless burning when the fire is set recklessly as opposed to willfully and maliciously. The study of the causes is the subject of
fire investigation
Fire investigation (sometimes referred to as origin and cause investigation) is the analysis of fire-related incidents. After firefighters extinguish a fire, an investigation is launched to determine the origin and cause of the fire or explosi ...
. A recent example of a reckless burning offense is the
El Dorado fire which took place in 2020 in California. This fire was caused by a
gender reveal party which utilized a smoke bomb which is categorized as unsafe pyrotechnics. The El Dorado fire burned over a 71-day period, destroyed 20 structures and resulted in one firefighter fatality, for which the couple hosting the party were charged with
involuntary manslaughter
Manslaughter is a common law legal term for homicide considered by law as less culpable than murder. The distinction between murder and manslaughter is sometimes said to have first been made by the ancient Athenian lawmaker Draco in the 7th ce ...
. The Esperanza Fire ultimately resulted in the death of firefighter Charles "Charlie" Morton, who became trapped while attempting to fight the fire. The DA of California considered arson charges for the family members as they were deemed negligent with regard to fire safety.
England

In
English law
English law is the common law list of national legal systems, legal system of England and Wales, comprising mainly English criminal law, criminal law and Civil law (common law), civil law, each branch having its own Courts of England and Wales, ...
, arson was a common law offence (except for the offence of
arson in royal dockyards) dealing with the criminal destruction of buildings by fire. The common law offence was abolished by s.11(1) of the
Criminal Damage Act 1971. The 1971 Act makes no distinction as to mode of destruction except that s.1(3) requires that if the destruction is by fire, the offence is charged as arson; s.4 of the Act provides a maximum penalty of life imprisonment for conviction under s.1 whether or not the offence is charged as arson. In Hong Kong, the common law offence was abolished by s 67 of the
Crimes Ordinance 1971 (Part VIII of which, as amended by Crimes (Amendment) Ordinance 1972, mirrored the English Criminal Damage Act 1971). Like the English counterparts, 63 of the 1972 Ordinance provides a maximum penalty of life imprisonment, and s 60(3) of the Ordinance requires that if the damage is by fire the offence should be charged as arson.
Myanmar
In the Burmese legal system, arson is considered "mischief by fire" under sections 435 and 436 of the
Myanmar Penal Code and punishable by fine and imprisonment.
The statutes were last amended on 1 July 2016, and made arson on houses and buildings punishable with up to 20 years in prison.
The
Burmese military has long used arson as a
weapon of war against civilians. From the
2021 Myanmar coup d'état to August 2022, military forces committed arson on 28,434 houses in the country.
Scotland
While the
Scottish legal system has no offence known as arson statutorily defined, there are many offences that are used to charge those with acts that would normally constitute arson in other nations. Events constituting arson in English and Welsh law might be dealt with as one or more of a variety of offences such as
wilful fire-raising,
culpable and reckless conduct,
vandalism or other offences depending on the circumstances of the event. The more serious offences (in particular wilful fire-raising and culpable and reckless conduct) can incur a sentence of
life imprisonment
Life imprisonment is any sentence (law), sentence of imprisonment under which the convicted individual is to remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term). Crimes that result in life impr ...
.
Ireland
Ireland differentiates how it charges arson not by degree but rather by what is being destroyed and if anyone was harmed. For example, while the sentence for setting fire to a building can be life imprisonment, the sentence for setting fire to goods in a building can only be up to fourteen year
A notable historical act of arson in Ireland is the
burning of Wildgoose Lodge, which resulted in the arrest, sentencing, and execution of 18 men, many of whom were innocent.
More recently, the
2023 Dublin riot involved instances of arson, with many such acts targeting vehicles.
Notable arsonists

*
Herostratus, accused of setting fire to the Temple of Artemis in 356 BCE.
*
Zayd ibn Musa al-Kazim, whose reign was characterized by a pogrom against the supporters of the Abbasids in 815 and 816, which earned him the nickname ''Zayd al-Nar'' ('Zayd of the Fire') due to the large numbers of houses belonging to Abbasid family members or their followers that he torched.
*
Murrough O'Brien, 1st Earl of Inchiquin, Irish nobleman and soldier, known as ''Murchadh na dTóiteán'' ("Murrough the Burner") for his role in the
Sack of Cashel and other similar atrocities during the
Cromwellian conquest of Ireland.
*
Margaret Clark set a home on fire in London in 1680.
*
David Berkowitz, American serial killer who was also implicated in many unsolved arsons in the New York City in the 1970s.
*
Peter Dinsdale, confessed to a total of 11 acts of arson, pleading guilty to 26 counts of manslaughter. The fires were set from 1972 to 1979.
*
John Leonard Orr, as arson investigator for the
Glendale, CA fire department who set over 2,000 Los Angeles fires from 1984 to 1991.
*
Julio González, the perpetrator behind the
Happy Land Fire killed 87 in 1990, likely as revenge against his ex-girlfriend.
*
Paul Kenneth Keller, convicted of setting over 107 fires in 1992 and 1993.
* John Magno and several others were responsible for the
Woodbine Building Supply fire in 2001.
*
Thomas Sweatt, set over 350 fires in and around Washington, D.C., most of which occurred in 2003 and 2004.
* Raymond Lee Oyler, set the
Esparanza Fire which burned over 41,000 acres of land, in 2006.
* Benjamin Christensen, volunteer firefighter from Pennsylvania responsible for setting seven fires from 2007 to 2008.
* Francisco Ignacio Mondaca and Francisco Pinto were responsible for starting the
2024 Chile wildfires that killed 137 people.
See also
*
Domicide
*
Fire investigation
Fire investigation (sometimes referred to as origin and cause investigation) is the analysis of fire-related incidents. After firefighters extinguish a fire, an investigation is launched to determine the origin and cause of the fire or explosi ...
*
Firefighter arson
*
Incendiary weapons
Incendiary weapons, incendiary devices, incendiary munitions, or incendiary bombs are weapons designed to start fires. They may destroy structures or sensitive equipment using fire, and sometimes operate as anti-personnel weapon, anti-personnel ...
*
Insurance fraud
Insurance fraud is any intentional act committed to deceive or mislead an insurance company during the application or claims process, or the wrongful denial of a legitimate claim by an insurance company. It occurs when a claimant knowingly attem ...
*
Pyromania
*
Reckless burning
*
Molotov cocktail
A Molotov cocktail (among several other names – ''see '') is a hand-thrown incendiary weapon consisting of a frangible container filled with flammable substances and equipped with a Fuse (explosives), fuse (typically a glass bottle filled wit ...
*
Kirk's Fire Investigation
References
Works cited
*
Further reading
*
* White, J. & Dalby, J. T., 2000. "Arson". In D. Mercer, T. Mason, M. McKeown, G. McCann (Eds.) ''Forensic Mental Health Care''. Edinburgh: Churchill Livingston.
External links
*
*
How to combat arsonAn actual Arson Investigation Report
{{Authority control
Fire
Crimes
Property crimes
Common law offences in Ireland
Organized crime activity
Terrorism tactics
Attacks by method