richard walton, thank you for your analysis. public order department for the city of london police. he's in our central london studio. good afternoon. i wonder what you make of the sort of understanding and picture we are building up of the nature of this device. and picture we are building up of the nature of this devicelj and picture we are building up of the nature of this device. i would go along very much with a lot of what richard walton has just said, but i disagree with his use of the phrase islamic. we need to be very careful in using that kind of term. it would be more appropriate to describe that as extremism. i urge course on with people using the word islamic, because that tends to two drive is lahm afobe, and we need to be much more careful —— —— islam are phobic reactions. yes, it looks like it has failed to detonate correctly, just like the bombs did in 21/7, just like the bombs did in 21/7, just weeks after the 7/7 bombs. who knows what the constituents of it are, but probably quite likely a mixture of trice ato

richard walton: >> there are some odd aspects to this case. you know, we have not seen a bucket before. it's a fairly crude device in a bag left. in recent times attacks of this nature have been suicide bombers using backpacks. >> reporter: there are 12,000 cameras in the london security system subway system. police are hoping they'll be able to identify the suspect, but as of tonight, the bomber is still on the loose. anthony. glm charlie d'agata in london. thanks. joining us now is john miller, deputy commissioner of intelligence and counter-terrorism for the new york city police department. and many of you will remember our former siern correspondent for cbs news. john, what's your assessment of the attempted bombing in london? >> well, i think what we're seeing is likely a lone wolf actor, probably inspired by what we've seen as new a juggernaut of propaganda coming from groups like al qaeda and particularly isis. and we are seeing that as they are being pummeled in the war zone and losing more territory, having soldiers leave the battlefi

investigation might go, what might be important, it's worth having a listen to this next interview, with richard waltonard. he helped fill in some of the background. reporting on the nature of this device, what do you make of it? it's dangerous to regulate at this stage and my former collea g u es regulate at this stage and my former colleagues will be keeping an open mind as to the nature of this attack. clearly the bomb hasn't done what it was intended to do, which is to kill and what it was intended to do, which is to killand maim many what it was intended to do, which is to kill and maim many people. there's a sense of relief, i'm sure, that the injuries are minor, not severe or life—threatening. the bomb itself looks like for the constituent parts look like many of the devices we seen over the years. also many of the devices on the islamic internet sites, which inspire individuals to carry out attacks using home—made bombs and readily available chemicals. bbc sources are telling us they learn this one may have had a time on it. again, a time, if it has indeed got a timer, it's pretty much the norm