I take your point about the police, Al, and suspect that most or all of those arrested will be released without charge. However, assembling the materials to make a suicide bomb is hard. That is a point in favour of his being part of a ring, something the police and security services have emphasised. If he is, we need to know.

By the way, there's nothing wrong with our talking about this. It's a very human thing to talk about distressing things that happen, just like it's very human to talk about jolly things. This thread is the appropriate place to talk about it. If you disagree, don't read it. If someone is displaying bad taste we can say so, but that's a different thing.