May said Thursday morning that the attacker was “a peripheral figure” who had been examined by MI5, Britain’s domestic counterintelligence agency, but who had not been “part of the current intelligence picture.” Mrs.
May said that the nation’s threat level would remain “severe,” meaning that an attack was likely, and would not be raised to “critical,” which is used to signal an imminent attack.
Torrance said that the full magnitude of the attack on the Parliament area had not yet sunk in.
Law enforcement officials said that the police were now focused on analyzing the background and the motive of the attacker.
Ramm said that the vehicle would undergo a major forensic examination, including checks for fingerprints and DNA to identify anyone else who might have been in the vehicle.