CSIS: Ray Boisvert

CSIS Dept: London, Ont. natives Xristos Katsiroubas, 22, and Ali Medlej, who was believed to be about 24, were two of the militants responsible for the attack , a News investigation confirmed. 'We ve seen a number of Canadians travel across the world to engage in conflict and they ve fallen prey to this message of this al-Qaeda extremist narrative.' Ray Boisvert, CSIS's former assistant director, according to CBC. "We ve seen a number of Canadians travel across the world to engage in conflict and they ve fallen prey to this message of this al-Qaeda extremist narrative," the CSIS's former assistant director, Ray Boisvert, told 's Peter Mansbridge and Canada is recommitting itself to fighting homegrown Islamic extremism following a News investigation that revealed at least two Canadians were involved in an al-Qaeda-linked attack on an Algerian gas plant in January that left dozens of refinery workers dead. RELATED: Al-Qaeda affiliates attracting Canadians, CSIS head says According to the web site of the Canadian Security Intelligence Service CSIS , "with the exception of the United States, there are more terrorist groups active in Canada today than in any other country in the world." (www.immigrantscanada.com). As reported in the news.