Al Jazeera's Nick Spicer reports on Canada's security laws that have led to the detention of several Muslims.

Canada's "security certificate" law allows the Government to detain non-citizens or put them under house arrest without charge.

Following the September 11 attacks on the United States, neighboring Canada used a long-standing legal mechanism to detain several Muslims.

Years later those men, such as Mohammed Harkat, are still living uncertain lives.