A man in his 40s has died after his car hit a tree on the A140 in Hevingham.
The crash happened at around 1.30am today on Cromer Road between Aylsham and Norwich.
Police said a black Volkswagen Passat had left the road and hit a tree.
A passing police car stopped and officers attempted CPR until paramedics arrived, but the driver died at the scene.
The road was closed while emergency services dealt with the incident and reopened shortly before 6am.
Police are keen to hear from anyone who may have witnessed the incident or noticed the driving manner of the Passat prior to the incident.
Anyone with information should contact the Serious Collision Investigation Team (SCIT) at Wymondham on 101.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here