Speaking after this afternoon's crash, Nottinghamshire Police issued this statement.
"A police vehicle responding to an emergency call has been in a collision with another vehicle in Nottingham this afternoon.
"A man and a boy have been taken to hospital. The male police officer was uninjured.
"An investigation has begun and is on-going."
More top news
East Midlands weather: Windy and rainy all night
West Midlands weather: Windy and wet with gales
Co-pilot Andreas Lubitz, who crashed a plane into the French Alps, was in therapy for suicidal tendencies before getting his pilot's licence