A car ramming attack outside the Palace of Westminster, the seat of the British Parliament, killed 5 people. Briton Khalid Masood drove up onto the pavement and ramming pedestrians, before exiting the vehicle and fatally stabbing an unarmed police officer.

Digital forensic investigators retrieved extremist linked content and messages from the perpetrators phone. ISIS claimed responsibility for the attack, but no definitive link was found between the group and Masood.