Question: How many people were killed by a van bomb by the man Inga Bejer Engh prosecuted in a high profile 2012 trial?

Context articles: LulzSec
Inga Bejer Engh
Anders Behring Breivik
Gerlög and Inga
The Troubles in Limavady
Inga–Shaba HVDC
World of Hell
Jeremy Dein
1979 Bessbrook bombing
Svein Holden

Lulz Security, commonly abbreviated as LulzSec, was a black hat computer hacking group that claimed responsibility for several high profile attacks, including the compromise of user accounts from Sony Pictures in 2011.
 The group also claimed responsibility for taking the CIA website offline.
 Some security professionals have commented that LulzSec has drawn attention to insecure systems and the dangers of password reuse.
 It has gained attention due to its high profile targets and the sarcastic messages it has posted in the aftermath of its attacks.
 One of the founders of LulzSec was computer security specialist Hector Monsegur, who used the online moniker Sabu.
 He later helped law enforcement track down other members of the organization as part of a plea deal.
 At least four associates of LulzSec were arrested in March 2012 as part of this investigation.
 British authorities had previously announced the arrests of two teenagers they allege are LulzSec members T-flow and Topiary.
Inga Bejer Engh (born 31 December 1970) is a Norwegian jurist and prosecutor.
 Together with prosecutor Svein Holden she was prosecuting terror suspect Anders Behring Breivik in the 2012 trial following the 2011 Norway attacks.
Anders Behring Breivik (] ; born 13 February 1979), known as Fjotolf Hansen from 2017, is a Norwegian far-right terrorist who committed the 2011 Norway attacks.
 On 22 July 2011 he killed eight people by detonating a van bomb amid Regjeringskvartalet in Oslo, then shot dead 69 participants of a Workers' Youth League (AUF) summer camp on the island of Utøya.
 In August 2012 he was convicted of mass murder, causing a fatal explosion, and terrorism.
Gerlög or Geirlaug and her daughter Inga were two powerful and rich women in 11th-century Uppland, Sweden.
 Gerlög and Inga had their dramatic and tragic family saga documented for posterity on several runestones.
 They lived in a turbulent time of religious wars between Pagans and Christians concerning the sacrifices at the Temple at Uppsala, and like many people of their social standing they had chosen the new faith.
 Their saga has been the centre of an exposition at the Stockholm County Museum dramatizing their story.
Four people were killed in violence relating to the Northern Ireland Troubles in the town of Limavady, County Londonderry.
 All were Protestants, and all were killed by the Provisional Irish Republican Army (PIRA, better known as the IRA).
 One was a prison officer and one was a Royal Ulster Constabulary (RUC) officer.
 The other two victims were civilians killed by a van bomb explosion outside the Limavady RUC base on 28 March 1972.
 They were driving past at the time of the attack.
The Inga–Shaba EHVDC Intertie (officially: The Inga–Shaba Extra High Voltage D.C. Intertie; nickname: Inga–Shaba and also referred to as Inga–Kolwezi) is a 1700 km -long high-voltage direct current overhead electric power transmission line in the Democratic Republic of Congo, linking the Inga hydroelectric complex at the mouth of the Congo River to mineral fields in Shaba (Katanga).
 It was primarily constructed by Morrison-Knudsen International, an American engineering company, with the converter equipment supplied by ASEA.
 Construction was completed in 1982 and it cost US$900 million.
 The scheme was, for many years, the longest HVDC line in the world.
World of Hell (or simply WoH) was a grey hat computer hacker group that claims to be responsible for several high profile attacks in the year 2001.
 It gained attention due to its high profile targets and the lighthearted messages it has posted in the aftermath of its attacks.
Jeremy Dein QC (born 29 June 1960) is an English barrister specializing in criminal defence.
 He has defended many high profile cases, including Tulisa Contostavlos where he succeeded in persuading the trial judge to bring to an end the first ever case of non-stage agent entrapment The main prosecution witness, the “"Fake Sheikh"”, Mazher Mahmood, was referred to the DPP for possible perjury charges following Jeremy’s cross-examination.
 Other high profile cases include McCluskie: The "EastEnders" case, where his defendant was accused of having murdered and dismembered Gemma McCluskie, his sister and a former EastEnders star.
The Bessbrook bombing took place on the 17 April 1979 when four Royal Ulster Constabulary (RUC) officers were killed when the Provisional IRA exploded an estimated 1,000 pound roadside van bomb at Bessbrook, County Armagh, believed to be the largest bomb used by the IRA up to that point.
Svein Holden (born 23 August 1973) is a Norwegian jurist having prosecuted several major criminal cases in Norway.
 Together with prosecutor Inga Bejer Engh Holden prosecuted terror suspect Anders Behring Breivik in the 2012 trial following the 2011 Norway attacks.