MI5 knew Westminster Bridge attacker Khalid Masood in 2004

A terrorist who killed five people, including a police officer, in a car and knife attack on Westminster Bridge in March 2017 was first known to MI5 thirteen years earlier.Khalid Masood, 53, was investigated as a potential extremist in 2010, but the first trace of him in the security service's records dates back to April 2004.The inquest into the deaths of Masood's victims has heard his phone number appeared in the contact list of someone known to Operation Crevice, which smashed a plot to