I am aware that gas canisters can be explosive under certain conditions. For example, liable to explode if they get too hot during a fire. The wording used in this report and others would indicate that this is not really a bomb threat and it is not linked to a terrorist threat. If this was a test for the new Home Secretary Jacqui Smith, she's failed it already because Jack Straw who is the new Minister of Justice and Lord Chancellor (and it has nothing to do with his department at all) has grabbed the media attention.
