Ahmed Omar Saeed Sheikh

His parents, Saeed and Qaissra Sheikh, emigrated from Pakistan to the UK in 1968 and ran a prosperous clothing business.

He was the eldest of three siblings and in his youth he attended Forest School, Walthamstow, an independent school in North-East London, whose alumni include English cricket captain Nasser Hussain, filmmaker Peter Greenaway and singer Suzana Ansar.

Between the ages of 14 and 16 he attended Aitchison College, the most exclusive boys boarding school in Pakistan, where his family had temporarily relocated.

He later returned to the United Kingdom to continue at Forest School.

Reuters journalist Daniel Flynn, who was a childhood friend, says that he was already an admirer of Pakistan's Islamist dictator General Zia-ul-haq-pakistani-cricketer">Zia-ul-haq and returned to London as "a junior boxing champion and full of stories of contacts with organised crime, gun battles in the ghettos of Lahore, visits to brothels."

Later, he attended the London School of Economics to study applied mathematics, statistics, economics and social psychology, but dropped out during his first year.

Ahmed Omar Saeed Sheikh (احمد عمر سعید شیخ; sometimes known as Umar Sheikh, Sheikh Omar, Sheik Syed or by the alias Mustafa Muhammad Ahmad; born 23 December 1973) is a British Pakistani terrorist.

Ahmed Omar Sheikh was born in London, England on December 23, 1973.

He became a member of the Islamist jihadist group Harkat-ul-Ansar or Harkat-ul-Mujahideen in the 1990s, and later of Jaish-e-Mohammed and was closely associated with Al-Qaeda.

He served five years in prison including the Delhi Tihar Jail in the 1990s in connection with the 1994 kidnappings of Westerners in India perpetrated by the Harkat-ul-Ansar (under the pseudonym of Al-Hadid), during which he had been caught.

The abductees included three British citizens, Myles Croston, Paul Rideout, and Rhys Partridge, and one American, Béla Nuss; all of them were rescued unharmed.

During his jail years, where he moved from jail to jail in different cities (e.g. New Delhi, Meerut, etc.), he was noted as wanting to read biographies of Adolf Hitler and Stalin and described "as a tough, militant youth with a sharp, calculating brain well capable of planning and executing terror acts with precision", while his counsel in Meerut, O.P. Sharma, remembers him as a "fanatic to the core" who "believed every non-Muslim is a kafir and must perish", that "there was no concept of democracy in Islam" and even that "at times he turned very violent and behaved like a mentally-challenged person" for instance when "he once beat up one of the deputy jailors at Meerut jail."

Becoming an adult, a "burly-chested six feet two inches" as per journalist Robert Sam Anson, he would eventually translate this violence into a love for martial arts and sports, participating in the 1992 World Armwrestling Championship in Geneva, while also being a chess champion during his days at the LSE.

Noted for his academic abilities, he's also a polyglot who could speak five languages.

The Guardian reported that Sheikh came into contact with radical Islamists at the LSE, quoting Hasan as saying "[he] told us he was going to Bosnia driving aid convoys, and he never came back to university".

Former Pakistani President Pervez Musharraf, in his book In the Line of Fire, stated that Sheikh was originally recruited by British intelligence agency MI6 while studying at the London School of Economics.

He alleges Sheikh was sent to the Balkans by MI6 to engage in operations.

Musharraf later says, "At some point, he probably became a rogue or double agent".

He travelled to Bosnia in 1993 during the Bosnian War and met other Pakistani Islamist militants with whom he went to an Afghan training camp and joined the anti-Indian terrorist group Harkat-ul-Ansar.

According to ABC, Sheikh began working for Pakistan's Inter-Services Intelligence (ISI) in 1993.

He was arrested-in-action during the 1994 kidnappings of Western tourists in India and served time in Indian prisons.

By 1994, he was operating training camps in Afghanistan and had earned the title of bin Laden's "special son."

He was released in 1999 and was provided safe passage into Afghanistan with the support of the Taliban in exchange for passengers aboard the hijacked Indian Airlines Flight 814.

In 1999, Indian Airlines Flight 814 was hijacked by five Pakistani militants belonging to the Harkat-ul-Mujahideen (formerly Harkat-ul-Ansar) while on the way from Kathmandu, Nepal to New Delhi, India.

The hijackers demanded the release of fellow Harkat-ul-Mujahideen members Sheikh and Masood Azhar (who went on to found Jaish-e-Mohammed which Sheikh later joined) and Mushtaq Ahmed Zargar, leader of another Pakistan-based anti-India terror organization.

The plane landed in Kandahar and Taliban militia surrounded the plane, pre-empting any Indian commando operation.

After negotiations between the Indian government and the hijackers, the hostages were freed eight days after the hijacking occurred, although a passenger, Rupin Katyal, was stabbed to death by one of the hijackers.

The three prisoners were released in exchange for the hostages, including Sheikh who was imprisoned at the Tihar Jail in Delhi.

Omar Sheikh married Saadia Rauf (who holds an MA degree in English) in Lahore in December 2000 and became a father in November 2001.

He is best-known for his role in the kidnapping and subsequent murder of Wall Street Journal reporter Daniel Pearl in 2002.

Sheikh was arrested by Pakistani police on 12 February 2002, in Lahore, in connection with the Pearl kidnapping and was sentenced to death on 15 July 2002 by a special judge of an anti terrorism court for murdering Pearl.

His complicity in the murder and the reasons behind it are in dispute.

At his initial court appearance, he stated, "I don't want to defend this case. I did this... Right or wrong, I had my reasons. I think that our country shouldn't be catering to America's needs", but he subsequently appealed his conviction for murder, only admitting his role in the kidnapping of Pearl.

The Guardian reported that a fellow student of Sheikh's at both the Forest School and the LSE, Syed Ali Hasan, had described him in 2002 as "bright but rather dysfunctional" and said that he had been suspended from school on several occasions because of his violent behavior.

He was known for his violence since his childhood, having punched and thrown to the floor a teacher when he was eight years old, and grew up to be a bully.

Sheikh also had financial connections with Aftab Ansari, perpetrator of the kidnapping of Partha Pratim Roy Burman and the 2002 attack on American cultural centre in Kolkata.

The Times has described Sheikh as "no ordinary terrorist but a man who has connections that reach high into Pakistan's military and intelligence elite and into the innermost circles of Osama Bin Laden and the al-Qaeda organisation."

Saeed's lawyer has stated he will base his client's appeal on the admission of Khalid Sheikh Mohammed, made public in 2007, that he is the killer of Daniel Pearl.

Sheikh's murder conviction was overturned (along with that of his accomplices Fahad Nasim Ahmed, Syed Salman Saqib and Sheikh Mohammad Adil) by Pakistan's Sindh High Court on 2 April 2020, and his seven-year sentence for kidnapping was considered as time-served.

, he is imprisoned at the Kot Lakhpat Jail, Lahore (where he had been shifted to from Central Prison Karachi) but has been moved out of death row while his acquittal for Pearl's murder is in appeal at the Supreme Court of Pakistan.