London’s worst terror attack in more than a decade has killed four people – and injured around 40.
The attacker is among the dead.
He drove a vehicle into pedestrians on a bridge before stabbing a policeman at Westminster.
Police believe he was inspired by Islamist-related international terrorism.
He stabbed 48-year-old police officer Keith Palmer to death.
British Prime Minister Theresa May’s paid tribute to him and his colleagues.