A pedestrian has been trapped under a London black cab and three others are injured after it mounted a kerb and smashed into crowds in Covent Garden.
Armed police are currently on the scene at the tourist hot spot after reports that the vehicle smashed into people as shoppers watched on in horror.
Metropolitan Police confirmed the driver was being held after stopping at the scene and do not believe the incident was terror-related.
A shocking picture shows the mangled car after it came to a halt near building works.
The incident appears to have taken place just a few yards from the Jubilee Market Hall, with stalls pictured in the background of photo.s
The London Ambulance Service said it had crews on the scene, but there was no immediate word on the number of casualties.