Manchester Arena attack

Sadness and condolences for this catastrophe but I started puzzling. One of the biggest arenas in Europe ; sell out crowd of young people - what was happening to the arena security routinely and was there any police presence before and during the event. after all this is a copycat of the Paris attack and the rock concert there but this on a much larger scale.

it's all well and good swinging into  action after the event but what was happening before it??

Completely different to the Paris attack, this was a suicide bomber apparently, no firearms involved.
 It happened at the end of the concert, just as parents were arriving to pick up their teenagers. There would be an awful lot of coming and going happening, very difficult for security to pick this up.

How very sad a happy event spoiled by terrorism. These were mostly teenage fans. It's incomprehensible.

I think the security services are very pro-active here. Good enough to catch many planned attempts at bombing or killing. We hear on the News about some of them but there are probably also others that we don't hear anything about.

I expect people going into last night's concert were vetted and no doubt quite a bit of vigilance took place while people were inside and enjoying it. Perhaps this bomber noticed that security relaxed somewhat once an event was over because, ordinarily, it might be thought the danger point was past. If this is a possible scenario, I don't think the same assumption will be made again.

My thoughts and condolences are with all those concerned 
A very sad and tragic end to an evening

It happened in the foyer,so he possibly was not vetted

reminds me of closing the barn door after the horse has bolted - let''s  watch everyone coming in and throw them to the dogs going out. I thought security should be 24-24 not give and take?

Think you are being very unfair there.

fairness doesn't mean much to young people dying - I think their families might have wanted better security going out as coming in??

bombers never accept blame surely??

It's early days and I expect News will come out about what happened, what didn't happen or shouldn't have happened. On reflection, it's probably wrong to assess matters just yet.

Maybe it is possible to try to put ourselves in the position of those who lost family  but also possible to put ourselves in the position of a security man ..who might also be a family man. I wonder if he will have a sense of failure that could last a lifetime, even though he wasn't responsible for the deaths and injuries. It must be hard to bear if people say his/her best wasn't good enough when their best was being given.

well we have no evidence their best was being given to those who died or were injured - as you said - perhaps to early to lay blame. We have a case in OZ were a deranged islamic guy held hostages in a sydney cafe for hrs - the police response at the formal inquiry was " we wont storm the cafe UNLESS he kills someone - he did kill two people then the police stormed in - they are now being heavily crucified by family and friends of the deceased for taking this stance. Police and security get slack the same as the rest of us at times

This seems to be more sophisticated

Talk of a network.

Visits to other countries in the past.

Think this is the beginning to an orginsed campaigne