The Air Ambulance is now on the scene of the major accident on the A11.
A coach was in collision with a black Mercedes close to the Great War Memorial, near Elveden.
Suffolk Police say all 30 people on the coach appear to be fine. There were four people in the Mercedes, two are said to be critically ill.Police are diverting traffic away from the scene via the A1605 and A134.
More top news
Clear spells overnight will lead to widespread frost and ice, with a few mist patches by Sunday morning.
Police are appealing for witnesses after a female pedestrian died following a hit and run collision in Essex.
Union officials are holding talks with administrators in an effort to save thousands of jobs following the collapse of City Link.