last seen in caledonia road in north london.th london but he is normally based, he comes from the newcastle area. it is not known why he was in this area, south london, the borough of lambeth. this part of london right next to one of london's busiest parks, clapham common. but they were keen to tracking down, find him, they're working with british transport police and have a lot of officers on the case and anyone who has any information, dash cam footage, cctv, security camera footage, cctv, security camera footage, they are being asked to get in touch with the metropolitan police to help them with their investigation, which is still in its early stages but it is now what seems to be a large—scale manhunt. charlie, thank you very much. that is our correspondent there in clapham, charlie rose. let's listen out a witness who was at the scene of the attack when it happened. i just saw the result of police outside, an ambulance, trying to treat the person that had been attacked. , , , , ., , attacked. residents must be really shocke