Whether it’s a fireman trying to avoid redundancy, a property developer trying to get hold of some land, some bloke throwing a fag end out of a car, a family having a BBQ where they shouldn’t or someone who claims to work for some terrorist organisation, it makes no difference who does it. The fact is someone ends up doing it. Personally I doubt it’s a terrorist organisation because it doesn’t give them any advantage, it doesn’t help them achieve their ends, and it doesn’t cause mass terror, which is the defining feature of a terrorist.