A "number of pedestrians" were injured when a car crashed into barriers outside Britain's Houses of Parliament on Tuesday, with armed police swooping in to arrest the driver, Scotland Yard said.
"The male driver of the car was detained by officers at the scene," the police statement said. "A number of pedestrians have been injured."
None of the injuries are believed to be "life-threatening", said police, who were yet to say if they suspected terrorism.
London Ambulance said they had treated two people at the scene for non-serious injuries and taken them to hospital.
Armed police immediately surrounded the silver car after it crashed at 7.37am (06:37 GMT), pointing guns a