A Canadian man has pleaded guilty to his role in a homegrown terrorism plot that heightened fears in a country where many people thought they were relatively immune from terrorist strikes.

Lawyer Robert Nuttall said Ali Dirie pleaded guilty Sept. 21 to one count of participating in a terrorist group.

Dirie, who is in his mid-20s, is the second adult to plead guilty since the 2006 arrest of the "Toronto 18," a group prosecutors accuse of planning to truck-bomb Toronto's Stock Exchange, a building housing Canada's spy agency and a military base.

Dirie still faces a charge for gun smuggling. Nuttall declined to comment further on the guilty plea, citing a publication ban on the case.