Surjan Singh Gill was a suspect in the Air India bombing, and has been alleged to have been a possible Canadian Security Intelligence Service

Canadian Security Intelligence Service

The Canadian Security Intelligence Service is Canada's national intelligence service. It is responsible for collecting, analyzing, reporting and disseminating intelligence on threats to Canada's national security, and conducting operations, covert and overt, within Canada and abroad.Its...

 (CSIS) mole.

Gill referred to himself by the self-proclaimed title of "Consular General of Khalistan

Khalistan

Khalistan refers to a global political secessionist movement to create a separate Sikh state, called Khālistān , carved out of parts mostly consisting of the Punjab region of India, depending on definition....

", and was a member of Babbar Khalsa

Babbar Khalsa

Babbar Khalsa , also known as Babbar Khalsa International , is a Sikh armed organisation based in India. Many consider the Babbar Khalsa a Resistance movement, and it played a prominent role in the Punjab insurgency. Babbar Khalsa International was created in 1978, after a number of Sikhs were...

 up until three days before the bombing . It has been suggested that CSIS wanted to pull "their man" out of the group as soon as they realised that a serious plot was underway and about to take place.

Although a central figure in the investigation, Gill was never charged and disappeared after flying to the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

.