On June 23 , 1985 : BKI militants bombed Air India Flight 182 going from Montreal , Canada to New Delhi , India . An improvised explosive device placed inside the cargo hold of the Boeing 747 destroyed the plane with an explosion at an altitude of 31,000 feet in Irish airspace and it crashed into the Atlantic Ocean . All 329 passengers were killed , including 268 Canadian , 27 British and 24 Indian citizens . Parmar and Inderjit Singh Reyat were arrested by the Royal Canadian Mounted Police ( RCMP ) on explosive charges , linking the two to the Air India Flight 182 bombing and 1985 Narita International Airport bombing . Parmar was acquitted of all charges . Inderjit Singh Reyat admitted to building the bomb , was convicted in the Air India bombing . Reyat a member of the ISYF , was found guilty of manslaughter for making the bombs and had to spend more than 20 years in prison at Canada , and is the only individual convicted in these attacks as of 9 Feb 2009 . The Commission of Inquiry into the Investigation of the Bombing of Air India Flight 182 concluded that , regarding Talwinder Singh Parmar , " it is now believed that he was the leader of the conspiracy to bomb Air India flights " Five Babbar Khalsa members from Montreal were arrested May 30 , 1986 for another plot to bomb Air India flights out of New York City . Newspaper editor Tara Singh Hayer was targeted with a bomb at his office in January 1986 . Just weeks later , Sikhs from the Hamilton temple along with Air India bombing suspects Talwinder Singh Parmar and Ajaib Singh Bagri were arrested after being wiretapped discussing blowing up the Parliament and kidnapping children of MPs in India . Visiting Punjabi Cabinet Minister Malkiat Singh Sidhu was ambushed in Canada , surviving being shot in March 1986 by four gunmen
Air India Flight 182
Air India Flight 182
Babbar Khalsa