how many were carried out by just an individual who manufactured their own device and went ahead and did this, whether encouraged online or not and how many -- is the vast majority of this somebody connected to some sort of a netwo network, whether it's sophisticated or a couple of individuals? >> reporter: we have seen plots, many plots with just individuals who plan to be suicide bombers. we have also seen plots from networks, isis and al qaeda, where that's the case. i don't think that gets us anywhere closer to knowing whether this was a single individual who was responsible for this or a wider cell. i think those answers are going to come in the hours ahead. the first we will know about it if there are major raids across manchester and what we hear from the results of those. i think given the fact they will be going through all the cctv