Two children were taken to Lynn’s Queen Elizabeth Hospital after a five car smash on the A47 at Tilney All Saints.
Emergency services were called to the A47 at 8.20am after a Nissan Navara, Mercedez Sprinter van, BMW, Fiat Doblo van and a Ford Focus collided.
Two children with minor injuries and two adults with neck pain were taken to hospital.
Four ambulances were on the scene along with two Lynn fire crews were called to the scene.
Diversion through Tilney All Saints remain in place as the A47 is closed.