Where did they learn to build bombs?
And where did they get those majorly expensive cars! Some one very rich was buying their favor. There's no doubt about that!
When it comes to who did this - it depends on the meaning of the word "IS."
They may have put the bombs down on the ground, but who was financing it? Who was with them? Who planned it? Who did they have affiliations with?
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That's right, I'd forgotten about that. Didn't they and some of their friends have late model, high-end cars? This claim smells.