Yesterday, a man in an SUV mowed people down on Westminster Bridge before he drove into the perimeter fence at Parliament. The man exited the car and stabbed a police officer before other officers shot him down.
Overall, four people died, including the assailant and American Kurt Cochran.
Today, the Islamic State (ISIS) claimed responsibility while British officials arrested seven or eight in six raids across London and Birmingham. The authorities have identified the attacker as Khalid Masood, 52-years-old.