Mr. Speaker, given its mandate and specific operational requirements, CSIS does not generally disclose details related to its operational activities, such as subjects of investigation, operational exchanges, or reports.
CSIS is currently aware of approximately 60 individuals with a nexus to Canada who have engaged in terrorist activities abroad and returned to Canada. This number has remained relatively stable over the past two years, in part because it has become more difficult for extremists to successfully leave or return to Canada.
Due to the relatively small number of those individuals who have returned to Canada, the disclosure of more detailed information could identify specific operational interests. As such, CSIS is also unable to discuss the precise nature of its investigations, including details related to surveillance.
CSIS works closely with international and domestic partners, including law enforcement, to investigate those individuals who pose a threat to the security of Canada.