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."
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Cloudy and windy with occasional rain or drizzle, perhaps occasionally bright, then becoming mainly dry during the evening.
Police have begun searching a lake at a park in Coventry as they continue their investigation into the disappearance of Nicola Payne.
A dry evening, rain in the morning.