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
An angry fox trapped eight people inside a social club in Cambridgeshire for more than an hour after confronting them in the car park.
20 lottery winners have lent a hand at a pool refurbishment in Essex
Firefighters tackling a large fire in Thetford Forest say that they have now got it under control.