The crash between a Police car and a Peugeot 206 happened on Broxtowe Lane in Aslpey in Nottingham at around 14:00 this afternoon (March 31).
A 12-year-old boy and a man have been taken to hospital.
The police officer was responding to a 999 call, and was not injured in the collision.
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Cold and dry, with dense freezing fog for some.
Dry but chilly, despite sunny spells.
Frost had formed on the 12 year old horse after she had been dumped overnight, despite efforts, she could not be saved.