BRAMPTON, Ontario - The Toronto-area man who took part in a terrorist conspiracy is expected to be sentenced today.

Saad Khalid's lawyer has admitted the 23-year-old made "a huge mistake" but claims he was only a bit player in planned terror attacks by a group dubbed the Toronto 18.

The group had plans to detonate bombs outside the Toronto Stock Exchange and CSIS headquarters.

Khalid was arrested in 2006 while unloading what he and his fellow alleged conspirators believed was at least two tonnes of ammonium nitrate.

He pleaded guilty to one count of participating in a terror plot with the intention of causing an explosion.

The defence is suggesting that time already served in jail and a two-year prison term would be appropriate.

The Crown is calling for an 18 to 20 year sentence.