Question: Blast bomb, is a term used in Northern Ireland, for a type of improvised explosive device, a police officer was killed by a blast bomb in Northern Ireland during which ethno-nationalist conflict in Northern Ireland during the late 20th century, by loyalists?

Context paragraphs:
The Troubles: The Troubles (Irish: "Na Trioblóidí" ) was an ethno-nationalist conflict in Northern Ireland during the late 20th century.  Also known internationally as the Northern Ireland conflict, it is sometimes described as a "guerrilla war" or a "low-level war".  The conflict began in the late 1960s and it is usually deemed to have ended with the Good Friday Agreement of 1998.  Although the Troubles mainly took place in Northern Ireland, at times the violence spilled over into parts of the Republic of Ireland, England and mainland Europe.

Oktoberfest bombing: The Oktoberfest bombing was a terrorist attack with a right-wing radical background.  On 26 September 1980, 13 people died and 211 were injured after the explosion of an improvised explosive device at the main entrance of the Oktoberfest in Munich, West Germany.  The attack is considered to be the most severe act of terrorism in post-war West Germany.  The attack was attributed to the right-wing extremist and geology student Gundolf Köhler who was killed while placing the explosive device; however, doubts remain as to whether he acted alone.  Attempts to re-open the investigation in the years following the bombing have not been successful.

Car bomb: A car bomb, or truck bomb, also known as a vehicle-borne improvised explosive device (VBIED), is an improvised explosive device placed inside a car or other vehicle and detonated.

Lob bomb: A lob bomb (known officially as an improvised rocket-assisted mortar, improvised rocket-assisted munition, or IRAM) is a rocket-fired improvised explosive device made from a large metal canister (usually a propane gas tank that has been drained of its contents and filled with explosives, scrap metal, and ball bearings), which has been used by insurgents and coalition forces during the Iraq War since late 2007.  The weapon is essentially an airborne version of an improvised explosive device.

2004 Poso bus bombing: The 2004 Poso bus bombing was terrorist attack that occurred in Central Sulawesi, Indonesia, on 13 November 2004.  It targeted a bus travelling to the majority Christian village of Silancak.  The bomb, an improvised explosive device, exploded at 9:15 a.m. (UTC+7), while the minibus was stopped at a market in Poso.  Six people were killed and three injured in the blast.  Witnesses later reported that three people were involved in the attack.  Two suspects were detained, but later released.

Surgically implanted explosive device: A surgically implanted improvised explosive device (SIIED) is an explosive device hidden inside the body of a person in order to commit a suicide attack.  This type of terrorist weapon, more commonly known as Body Cavity Bomb (BCB), is only known to have been used once, in a failed assassination attempt.

Ammunition technician: An ammunition technician (AT) is a British Army soldier, formerly of the Royal Army Ordnance Corps but since 1993 of the Royal Logistic Corps, trained to inspect, repair, test, store, and modify all ammunition, guided missiles, and explosives used by the British Army.  These technicians are also trained to use demolition to safely dispose of individual items of ammunition and explosives (EODs) or to conduct logistics disposal of bulk stocks of multi items.  After gaining sufficient experience, those who show the appropriate qualities are given extra training to render safe improvised explosive devices (IEDs) by a process called improvised explosive device disposal.  Experienced ATs may be called to give evidence as expert witnesses in criminal or coroner's courts in relation to ammunition or explosives or to EOD and IEDD duties.

Bomb disposal: Bomb disposal is the process by which hazardous explosive devices are rendered safe.  "Bomb disposal" is an all-encompassing term to describe the separate, but interrelated functions in the military fields of explosive ordnance disposal (EOD) and improvised explosive device disposal (IEDD), and the public safety roles of public safety bomb disposal (PSBD) and the bomb squad.

2004 Grozny stadium bombing: The 2004 Grozny stadium bombing occurred on 9 May 2004 when a bomb exploded in the Dynamo stadium in the Chechen capital, Grozny, killing 10 people including the republic's president Akhmad Kadyrov and another 100 people were wounded.  Kadyrov's election was considered by many to be by a fraudulent vote.  The explosion was caused by a bomb planted underneath the concrete floor of the VIP podium and occurred at 10:35am during a parade and concert in Groznyy celebrating the 59th anniversary of the victory of Germany in World War 2.  The blast tore a hole in the section designated for dignitaries.  It was not clear if the explosion was specifically targeting Kadyrov or whether it would have occurred regardless of his presence, as he was not officially scheduled to be at this event.  Khussein Isayev, chairman of the Republic's state council, and Adlan Khasanov, a reported for Reuters, were also killed in the blast.  Col. Gen. Valery Baranov, the commander of the Russian military in the northern Caucasus was gravely wounded.  Although estimates of total casualties varied, at least ten people were killed and around fifty more injured.  The numbers include many civilians and WW2 veterans who were also attending the celebrations.  Officials believe that the blast was detonated by remote control and was intentionally installed below the VIP section.  The bomb may have been planted some time ago during the recent renovations to the stadium.  Preliminary reports suggest that the bomb was equivalent to one ton of TNT.  The location of the bomb made it impossible for existing equipment to detect.  The type of explosive appeared identical to one used to blow up the military parade two years ago in the Dagestani city of Kaspiysk.  Rescue workers prevented two other blasts in the stadium.  They were able to defuse another landmine and an additional explosive device equipped with a timer set to go off 30 minutes after the first explosion.

Blast bomb: Blast bomb is a term used in Northern Ireland for a type of improvised explosive device.  More specifically, these devices are usually a form of homemade grenade, which is thrown at a target.  These devices have been used in a number of public order situations, and in attacks on the Royal Ulster Constabulary, its successor Police Service of Northern Ireland (PSNI) and British Army.  A police officer was killed by a blast bomb in Northern Ireland during The Troubles by loyalists and in 2001 Loyalist protesters threw a blast bomb at Catholic schoolgirls, some as young as 4 years old, making their way to school in September 2001.  Ordinary fireworks are sometimes used in a similar fashion to blast bombs.  Such devices which are packed with nails are referred to as nail bombs.

Supporting paragraphs: Blast bomb The Troubles
Answer: The Troubles