casualties, they have said someone is in custody and they re working to get to the bottom of precisely what happened here. and we re going to continue to monitor their twitter feed. they do tweet quite a bit when we ve seen these incidents unfold, sadly as you mentioned, multiple times in the past few months. i want to bring in juliette cayyem who is joining us via skype. again, juliette, all we know is this incident happening a little after made night local time there in london, in the northern part of the city, that there was a vehicle that hit pedestrians, multiple casualties and at least one person under arrest. we do not know whether this could be terror-related or an isolated incident, but a lot of people s minds go through because of the history, the recent history in london. reporter: and you would actually want at least the british police s minds to go there in terms of an investigation. that s why you have seen such a quick reaction on twitter and them trying to at least