is in full force at this very early saul ri. >> kelly, here with the scene from there and what it's been like this whole evening long as we've gone through the slow realization that this was, in fact, what we all feared it was and that is investigators are pointing to a single acting alone, that is, suicide bomber at one of the, potentially one of the main exits. we're joined in the staud yi by police commissioner bill. commissioner when you hear kelly report, again, sources of the investigating world i know who this is, i know what this is. what does it take for them to be able to say that, first and second what is our relationship for people who are just joining our coverage and talked about this a little bit earlier, what's our relationship with the uk back in forth? >> relationship with the uk