Terror attack in London: live updates

We know who did it :British police .The police in Britain as promised to name the person behind the terrorist attack that took the lives of 7 people and got many wounded .
     Therasa May has said the police has promised to name the three attackers
      Extra  securities was seen on Monday as the police are trying to make arrangements for more arrest .It was a third attack this year after a man drove his car into the pedestrians on Westminster bridge in march this year