A two vehicle crash at Selwyn Corner, in Guyhirn, took place on Monday, February 5.
The Fenland Response Team, Wisbech Neighbourhood Policing Team, Cambridgeshire Fire and Rescue Service and the East of England Ambulance Service attended the scene.
One car had left the road and ended up on top of the river bank.
Two people have been taken to hospital for checks.
Enquiries continue into the collision.
In a post on Facebook, Fenland Policing said: "If you witnessed the collision please call 101 and quote CAD 327 of 05.02.24."
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