A MAN arrested after a fatal crash on the M5 has been released under investigation.

Emergency services were called to the northbound carriage of the M5 at 2.15am on Friday, December 21.

The driver of one of the cars, a man, was taken to hospital, but sadly died.

The driver of the other car, a man in his 20s, was arrested following the incident for failing to pass a roadside breath test.

He has since been released under investigation.

READ MORE: Arrest after fatal smash on M5

The man who died has not yet been identified but police say next of kin has been informed.

Avon and Somerset Police is now appealing for witnesses to the crash to come forward.

A spokesman for the police said: "If you were on the motorway at the time and witnessed the collision, or saw a white Audi A3 or a black Mini Cooper in the moments before it happened, please get in touch by calling 101 and quote reference number 5218281062."