The A17 has re-opened after a collision on the approaches to King's Lynn.
Police said a lorry and a car were involved in the collision at Terrington St Clement.
Officers tweeted: 'Police currently on scene at an rtc A17 near to Station Road. Lynn bound carriageway is blocked and traffic is being diverted along the C80.'
The road re-opened around two hours later. An ambulance spokesman said: 'An ambulance and an ambulance car were sent. An adult male was treated for a head injury, and conveyed to Queen Elizabeth Hospital for further treatment.'
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