2017 Westminster attack
Police treated the attack as "Islamist-related terrorism". Masood said in a final text message that he was waging jihad in revenge for Western military action in Muslim countries in the Middle East. Amaq News Agency, which is linked to Islamic State, said the attacker answered the group's calls to target citizens of states that were fighting against it, though the claim was questioned by the UK police and government. Police have found no link with a terrorist organisation and believe Masood acted alone. Provided by Wikipedia