Police are appealing for witnesses following a fatal collision in Crimplesham.
It happened on Wednesday 13 August at 3.37pm on the A1122 (Downham Road) and involved a grey Audi A5 and a blue BMW iX1.
The road was closed whilst emergency services including ambulance and air ambulance attended.
A passenger in the Audi - a man in his 20s - sadly died at the scene.
The driver of the Audi - a man in his 60s - and two other passengers were taken to hospital for treatment. One of those passengers suffered life threatening injuries.
The driver of the BMW, a woman in her 40s, was taken to hospital with serious injuries.
The road reopened at 11pm.
Norfolk Police would like to speak to anyone who may have witnessed the collision or who stopped at the scene, as well as anyone who may have any relevant dashcam footage.