A teenage boy has died following a collision between a Fiat Punto and two lorries on the A14.
The accident took place yesterday afternoon on the eastbound carriageway close to the Trimley St Mary slip road.
The driver of the Punto, a woman in her 50s, was pronounced dead at the scene.
A teenage passenger was taken to Addenbrooke's Hospital, but Suffolk Police today revealed that he had died.
A second passenger, a man in his sixties, suffered life threatening injuries and was taken to Ipswich Hospital where he remains in a critical condition.
A 50-year-old man from Dovercourt was arrested on suspicion of causing death by dangerous driving. He has been released on police bail and is due to return on Tuesday 16 October.
Anyone who witnessed the incident should contact the Serious Collision Investigation Team on 101.