A car crashed into barriers outside Britain’s Houses of Parliament in a suspected terror attack on Tuesday, injuring a “number of pedestrians” yards from where five people were killed last year.
Police said they had arrested the driver, in his 20s, and were holding him on suspicion of terrorist offences.
“At this stage, we are treating this as a terrorist incident,” said Scotland Yard, adding that none of the injuries are believed to be “life-threatening”.
The silver Ford Fiesta collided with a number of cyclists and pedestrians, before crashing into barriers outside the Houses of Parliament at 07:37 (06:36 GMT), said police.
Armed officers swooped in to arrest the driver, removing him from the vehicle at gunpoint.
Later images showed police holding the man, dressed in jeans and a black puffer jacket, in handcuffs as roads and Underground stations around parliament were sealed off.
“The driver of the car, a man in his late 20s… was arrested on suspicion of terrorist offences,” said police.
“There was nobody else in the vehicle, which remains at the scene and is being searched. No weapons have been recovered at this stage.
“A number of people were injured,” added police.
London Ambulance said they had treated two people at the scene for non-serious injuries and taken them to hospital.
Prime Minister Theresa May tweeted that her “thoughts are with those injured in the incident in Westminster and my thanks to the emergency services for their immediate and courageous response.”
Witness Ewalina Ochab told the Press Association that the incident “looked intentional”.
“I was walking on the other side. I heard some noise and someone screamed,” she said.
“I turned around and I saw a silver car driving very fast close to the railings, maybe even on the pavement.
“I think it looked intentional — the car drove at speed and towards the barriers.”