ONE person remains in hospital with "potentially serious injuries" following a three-vehicle crash which closed part of the M4 motorway.

Two cars – a grey Renault and green Landrover – and a caravan were involved in an accident near Junction 24 on Monday.

The incident closed the motorway for hours.

A spokeswoman from Gwent Police said one person remains in hospital.

She said: "Seven people were taken to hospital – six have been released and one person is still in hospital with potentially serious injuries but they are in a stable condition.

"Officers are investigating and are appealing for anyone with dashcam footage of the collision to email or to call 101 quoting log 180 9/7/18."