The attacker who plowed a car through a throng of pedestrians and then stabbed a policeman outside Britain’s parliament was named on March 23 as Khalid Masood, a British-born man who was once investigated by MI5 intelligence officers over concerns about violent extremism.
Reuters: Police identify British-born attacker, victim count rises to four
People leave after being evacuated from the Houses of Parliament in central London on March 22, 2017 during an emergency incident. Britain's Houses of Parliament were in lockdown on March 22 after staff said they heard shots fired, triggering a security alert.
