
A pressure cooker bomb is an
improvised explosive device
An improvised explosive device (IED) is a bomb constructed and deployed in ways other than in conventional military action. It may be constructed of conventional military explosives, such as an artillery shell, attached to a detonating mecha ...
(IED) created by inserting
explosive material
An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An expl ...
into a
pressure cooker and attaching a
blasting cap into the cover of the cooker.
Pressure cooker bombs have been used in a number of attacks in the 21st century. Among them have been the
2006 Mumbai train bombings,
2010 Stockholm bombings (failed to explode), the
2010 Times Square car bombing attempt
On May 1, 2010, a terrorist attack was attempted in Times Square in Manhattan, New York. Two street vendors alerted NYPD after they spotted smoke coming from a vehicle, and a car bomb was discovered. The bomb had been ignited, but failed to ex ...
(failed to explode), the 2013
Boston Marathon bombing
The Boston Marathon bombing was a domestic terrorist attack that took place during the annual Boston Marathon on April 15, 2013. Two terrorists, brothers Dzhokhar Tsarnaev and Tamerlan Tsarnaev, planted two homemade pressure cooker bombs ...
, and the 2017
Manchester Arena bombing
On 22 May 2017, an Islamist extremist suicide bomber detonated a shrapnel-laden homemade bomb as people were leaving the Manchester Arena following a concert by American pop singer Ariana Grande.
Twenty-three people were killed, including ...
.
Description

Pressure cooker bombs are relatively easy to construct. Most of the materials required can be easily obtained. The bomb can be triggered using a simple
electronic device such as a digital watch, garage door opener, cell phone, pager, kitchen timer, or alarm clock.
The power of the explosion depends on the size of the pressure cooker and the amount and type of explosives used.
[ ]
Similar to a
pipe bomb, the containment provided by the pressure cooker means that the energy from the explosion is confined until the pressure cooker itself explodes. This in turn creates a relatively large explosion using
low explosives and generating potentially lethal
fragmentation
Fragmentation or fragmented may refer to:
Computers
* Fragmentation (computing), a phenomenon of computer storage
* File system fragmentation, the tendency of a file system to lay out the contents of files non-continuously
* Fragmented distributi ...
.
History
2000–09
French police prevented
a terrorist attack in Strasbourg, France, on New Year's Eve 2000. Ten
militants were convicted for the plot.
From 2002–04, pressure cooker bombs were widely used in terror and IED attacks in
Afghanistan
Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bord ...
,
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
, and
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
.
In 2003, a terrorist from
Chechnya named Abdullah, carrying a pressure cooker bomb detonated explosives and killed six people before being arrested near
Kabul International Airport
, nativename-r =
, image = Flightline at Kabul International Airport.jpeg
, caption = The flightline at Kabul International Airport in January 2012
, IATA = KBL
, ICAO = OAKB
, ...
in Afghanistan.
The
Taliban
The Taliban (; ps, طالبان, ṭālibān, lit=students or 'seekers'), which also refers to itself by its state name, the Islamic Emirate of Afghanistan, is a Deobandi Islamic fundamentalist, militant Islamist, jihadist, and Pas ...
claimed responsibility.
In 2004, the
Department of Homeland Security
The United States Department of Homeland Security (DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior or home ministries of other countries. Its stated missions involve anti-te ...
issued a warning to US agencies about pressure cookers being converted to IEDs.
In July 2006, in Mumbai, India, 209 people were killed and 714 injured by pressure cooker bombs in the
2006 Mumbai train bombings.
According to
Mumbai Police
The Mumbai Police (Marathi: मुंबई पोलीस, IAST: ''Mumbaī Pulīs'', formerly ''Bombay Police'') is the police department of the city of Mumbai, Maharashtra. It is a part of Maharashtra Police and has the primary responsibiliti ...
, the bombings were carried out by
Lashkar-e-Taiba
Lashkar-e-Taiba (LeT; ur, ; literally ''Army of the Good'', translated as ''Army of the Righteous'', or ''Army of the Pure'' and alternatively spelled as ''Lashkar-e-Tayyiba'', ''Lashkar-e-Toiba'', ''Lashkar-i-Taiba'', ''Lashkar-i-Tayyeba'') ...
and
Students Islamic Movement of India
The Students' Islamic Movement of India ( abbreviated SIMI) is a banned terrorist organisation that was formed in Aligarh, Uttar Pradesh in April 1977. The stated mission of SIMI is the ‘liberation of India’ by converting it to an Islamic ...
(SIMI).
2010–present
Step-by-step instructions for making pressure cooker bombs were published in an article titled "Make a Bomb in the Kitchen of Your Mom" in the
Al-Qaeda
Al-Qaeda (; , ) is an Islamic extremism, Islamic extremist organization composed of Salafist jihadists. Its members are mostly composed of Arab, Arabs, but also include other peoples. Al-Qaeda has mounted attacks on civilian and military ta ...
-linked
''Inspire'' magazine in the summer of 2010, by "The AQ chef".
The article describes the technique as a simple way to make a highly effective bomb. Analysts believe the work was the brainchild of
Anwar al-Awlaki
Anwar Nasser al-Awlaki (also spelled al-Aulaqi, al-Awlaqi; ar, أنور العولقي, Anwar al-‘Awlaqī; April 21 or 22, 1971 – September 30, 2011) was an American imam who was killed in 2011 in Yemen by a U.S. government drone stri ...
, and edited by him and by
Samir Khan. ''Inspires goal is to encourage "
lone wolf" Jihadis to attack what they view as the enemies of ''
Jihad
Jihad (; ar, جهاد, jihād ) is an Arabic word which literally means "striving" or "struggling", especially with a praiseworthy aim. In an Islamic context, it can refer to almost any effort to make personal and social life conform with Go ...
'', including the United States and its allies.

Several
Islamic radical terrorist attempts in the 2010s involved pressure cooker bombs.
The unsuccessful
Times Square car bombing attempt in May 2010, in New York City, included a pressure cooker bomb which failed to detonate.
The bomb-maker,
Faisal Shahzad, was sentenced to life in prison.
In the December
2010 Stockholm bombings, Taimour Abdulwahab al-Abdaly, an Islamic extremist
suicide bomber
A suicide attack is any violent attack, usually entailing the attacker detonating an explosive, where the attacker has accepted their own death as a direct result of the attacking method used. Suicide attacks have occurred throughout history ...
who cited Swedish military presence in Afghanistan as justification for attacking Sweden. He set up a pressure cooker bomb, which failed to detonate.
Pressure cooker bombs were utilized in the
2011 Marrakesh bombing
The 2011 Marrakesh bombing was a domestic terrorist bombing of the Argana Cafe in Jemaa el-Fnaa, Marrakesh, Morocco, on April 28, 2011. A lone terrorist, Adil El-Atmani, planted two homemade pressure cooker bombs hidden inside of a backpack at ...
, where Adil El-Atmani, a Moroccan citizen who had pledged allegiance to
Al-Qaeda in the Islamic Maghreb, remotely detonated 2 homemade bombs, killing 17 and injuring 25.
In July 2011,
Naser Jason Abdo, a U.S. Army private at
Fort Hood, Texas
Fort Hood is a United States Army post located near Killeen, Texas. Named after Confederate General John Bell Hood, it is located halfway between Austin and Waco, about from each, within the U.S. state of Texas. The post is the headquarte ...
, who took pressure cooker bomb-making tips from the Al-Qaeda magazine article, was arrested for planning to blow up a restaurant frequented by U.S. soldiers. Two pressure cookers and bomb-making materials were found in his hotel room.
He was sentenced to life in prison.
In Pakistan, in March 2010, six employees of
World Vision International were killed by a remotely detonated pressure cooker bomb.
In October 2012, French police found a makeshift pressure cooker with bomb-making materials near Paris as part of an investigation into an attack on a
kosher grocery store.
Two pressure cooker bombs were used in the
Boston Marathon bombings
The Boston Marathon bombing was a Domestic terrorism in the United States, domestic terrorist attack that took place during the annual Boston Marathon on April 15, 2013. Two terrorists, brothers Dzhokhar Tsarnaev and Tamerlan Tsarnaev, plante ...
in April 2013. The pressure cookers were filled with nails,
ball bearings
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.
The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this ...
, and
black powder
Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, carbon (in the form of charcoal) and potassium nitrate ( saltpeter) ...
. Initially, it was believed the devices were triggered by kitchen-type egg timers, however, subsequent evidence indicated a remote device was used to trigger the bombs. One of the bombers,
Dzhokhar Tsarnaev, told investigators that he learned the technique from an article in ''Inspire'' magazine.
On
Canada Day 2013, pressure cooker bombs failed to explode at the
Parliament Building in
Victoria, British Columbia
Victoria is the capital city of the Canadian province of British Columbia, on the southern tip of Vancouver Island off Canada's Pacific coast. The city has a population of 91,867, and the Greater Victoria area has a population of 397,237. T ...
.
On May 19, 2016, passengers on a bus in
Wrocław
Wrocław (; , . german: Breslau, , also known by other names) is a city in southwestern Poland and the largest city in the historical region of Silesia. It lies on the banks of the Oder in the Silesian Lowlands of Central Europe, roughly ...
, Poland, alerted the driver to a suspicious package. The driver removed the package from the bus. Shortly later it
exploded with no fatalities but did injure one woman slightly. Authorities believed it was a three liter pressure cooker packed with nails and nitrate explosive.
On September 17, 2016, an explosion occurred in Lower Manhattan, New York, wounding 29 civilians. The origin of the explosion was found to be a pressure cooker bomb. At least one other bomb was found unexploded. A suspect for
that explosion and others in New Jersey, Ahmad Khan Rahami, was captured two days later.
Both the
2010 Stockholm bombings and the foiled
2016 Sweden terrorism plot involved pressure-cooker bombs.
See also
*
Car bomb
*
Nail bomb
*
Time bomb
A time bomb (or a timebomb, time-bomb) is a bomb whose detonation is triggered by a timer. The use (or attempted use) of time bombs has been for various purposes including insurance fraud, terrorism, assassination, sabotage and warfare. They a ...
*
Pipe bomb, another type of IED that works in a similar way to a pressure cooker bomb
References
External links
US Department of Homeland Security information leaflet on pressure cooker bombs July 1, 2010
{{DEFAULTSORT:Pressure cooker bomb
Bombs
Explosives
Explosive weapons
Improvised explosive devices
Terrorism tactics
Plots and attacks using pressure cooker bombs
Insurgency weapons