No confirmed link or motives but worth watching A witness told the BBC he saw a young man and young woman being stabbed. The man, who did not give his name, said he heard "awful, blood-curdling screams" and looked out of his window to see a "guy dressed all in black with a hood and rucksack grappling with some people". 2.30pm Nottinghamshire Police said they were keeping an "open mind" over the attack's motive while working alongside their counter-terror colleagues to "establish the facts".
