Three men have been killed and one seriously injured in a crash on the M5 motorway.
Police investigators believe the incident involved five vehicles and started when a Ford Mondeo and an MG Rover collided in the early hours of Thursday morning.
An HGV then stopped and was involved in a further collision with a black Mazda and a silver Mercedes. The dead and seriously injured were a group of four men from Gloucester travelling in the Mercedes.
The 24-year-old driver died at the scene along with a 23-year-old passenger. Another 23-year-old passenger was taken to Queen Elizabeth Hospital in Birmingham in a critical condition. He died on Friday.
The final passenger, another 23-year-old, remains in a critical condition in Southmead Hospital in Bristol.
A man who was a passenger in the Mazda and the driver of the Mondeo were taken to Gloucestershire Royal Hospital. Both are believed to have suffered injuries that are not life-threatening.
The incident happened between junctions 8 and 9 southbound of the motorway, about half a mile south of the M50 junction. A spokesman for Gloucestershire police confirmed the motorway, which was closed for investigations to take place, has now reopened.
The constabulary said none of the other people involved were believed to be seriously injured.
The force spokesman said the male driver of the MG Rover left the scene of the collision before police arrived, and appealed for him to come forward.
“Anyone who witnessed the collision or has any information but hasn’t yet spoken to police should call 101 and quote incident 17 of 2 June,” he added.
- This article was amended on 3 June 2016 to reflect the updated death toll