An investigation has begun into an accident in which a teenage girl was hit by a police vehicle in Nottingham.
The accident happened on Canal Street on Friday night as the vehicle was responding to an emergency call.
The 16-year-old suffered serious injuries and was taken by ambulance to the Queen's Medical Centre where she is still being treated.
The investigation into the accident is being supervised by the Independent Police Complaints Commission.
Police have been unable to confirm whether the vehicle was a car or a van.
The girl was outside the Via Fossa pub at 2210 GMT when the collision happened.
The licensee there, Kate Whitehead, described what she saw; "The lights were flashing, it was a police road traffic car and there was another police car near it.
"People were hysterical and I phoned an ambulance just in case because while the police were going to do it you just do it yourself just in case."
Canal Street was closed in both directions while officers examined the scene.