Westminster attack: In pictures

Injured people are assisted after an incident on Westminster Bridge in London. Photograph: Toby Melville/Reuters
A member of the public is treated by emergency services near Westminster Bridge and the Houses of Parliament in London. A police officer has been stabbed near to the British parliament and the alleged assailant shot by armed police. Scotland Yard report they have been called to an incident on Westminster Bridge where several people have been injured by a car. Photograph: Carl Court/Getty Images
Members of the public are treated by emergency services near Westminster Bridge and the Houses of Parliament in London. At least one person has reportedly died in the ‘terrorist attack’. Photograph: Carl Court/Getty Images
An injured man is assisted on the footpath under Westminster Bridge after a ‘terrorist incident’ in London. Photograph: Toby Melville/Reuters
Armed police push people back following a major incident outside the Houses of Parliament in central London. Photograph: Andy Rain/EPA
An air ambulance on Parliament Square following a major incident outside the Houses of Parliament in central London. One woman has died following the ‘terrorist incident’. Photograph: Andy Rain/EPA
Emergency services at the scene outside the Palace of Westminster, London, after a policeman was stabbed and his apparent attacker shot by officers in a major security incident at the Houses of Parliament. Photograph: Stefan Rousseau/PA Wire
A woman assists an injured person after an incident on Westminster Bridge in London. Photograph: Toby Melville/Reuters
Armed police respond outside parliament during an incident on Westminster Bridge in London. Photograph: Stefan Wermuth/Reuters