The first is where there are reasonable grounds to suspect that a person will commit an imminent terrorist act (or is in possession of materials for that purpose, or has done something in pursuit of that purpose) and the person &apos; s detention would substantially assist in preventing a terrorist act from occurring and detaining the person is reasonably necessary for the latter purpose (sect. 105.4 (4) and (5)).
The first is where there are reasonable grounds to suspect that a person will commit an imminent terrorist act (or is in possession of materials for that purpose, or has done something in pursuit of that purpose) and the person &apos; s detention would substantially assist in preventing a terrorist act from occurring and detaining the person is reasonably necessary for the latter purpose (sect. 105.4 (4) and (5)).