The man who mowed down pedestrians and stabbed a policeman in an assault on the heart of British democracy was 52-year-old Khalid Masood, who was born in Kent in southeast England, police said on Thursday.
London's Metropolitan Police said in a statement that Masood was known by "a number of aliases" and had been living in the West Midlands, which includes the city of Birmingham where there was an armed police raid overnight.
