M5 crash: Two die on motorway in Gloucestershire
Two men have died and two others have been critically injured in crashes involving several vehicles on the M5.
Four cars and a lorry were involved in two crashes which happened at 01:00 BST between J8 and J9 southbound.
Two men from Gloucester - the driver, 24, and passenger, 23, of a Mercedes car - died in the second crash.
Two other 23-year-old male passengers remain critically ill in hospital. One of the drivers involved in the crashes had fled the scene, police said.
The carriageway was shut for 11 hours between the two junctions.
Police said the first crash was between a Ford Mondeo and MG Rover, south of the M50 junction.
"An HGV then stopped and was involved in a collision with a silver Mercedes and black Mazda," a force spokesman said.
He said the male driver of the MG Rover left the scene of the collision before police arrived, and is appealing for him to come forward.
The injured passengers in the Mercedes were taken to Queen Elizabeth Hospital in Birmingham and Southmead Hospital in Bristol.
Four other people from other vehicles involved in the collision were assessed and treated by South Western Ambulance Service.
The southbound carriageway of the M5 has reopened.
Highways England said emergency crews from three different counties had been involved in the aftermath.