— In 2010, police made three high-profile arrests in an alleged plot to commit acts of terror on Canadian soil. Sher, Misbahuddin Ahmed of Ottawa and a third alleged co-conspirator were all arrested. Ahmed was convicted of two terrorism-related offences in July; the other alleged co-conspirator has yet to stand trial.
— In 2009, software engineer Momin Khawaja, the first person charged under the Anti-Terrorism Act, was convicted for his role in a plot to plant fertilizer bombs in the United Kingdom. Khawaja, who is serving a life sentence, has denied the charges, saying he is a victim of a racist and biased government.
— In 2006, police in Toronto arrest a large group of young men who later become known as the Toronto 18. They are accused of plotting to bomb targets including the Toronto Stock Exchange, CSIS headquarters and a military base. Eleven were ultimately convicted of terrorist offences. In January 2010, one of the men, Zakaria Amara of Mississauga, Ont., was sentenced to life in prison. Fellow suspect Saad Gaya from Oakville, Ont., was sentenced to 12 years.
— In July, Toronto resident Mohamed Hersi was sentenced to 10 years behind bars after being convicted of trying to travel overseas to join a terrorist group. Hersi was arrested in 2011 while awaiting a flight in Toronto destined for Cairo. The Mounties alleged he was on his way to join al-Shabab, a group of Islamist insurgents based in Somalia.
— In July, Hasibullah Yusufzai, a 25-year-old B.C. man, was charged for allegedly leaving the country to join Islamist fighters in Syria. The RCMP said Yusufzai was known to have travelled to Syria some time in January to join Islamist fighters. In February, Canadian Security Intelligence Service director Michele Coulombe told a Senate committee there were believed to be some 130 Canadians working abroad in support of extremist activities.
— In April 2013, Chiheb Esseghaier and Raed Jaser were charged in connection with a plot — allegedly guided by al-Qaida in Iran — to attack a Via Rail/Amtrak passenger train that runs between Toronto and New York City.