The westbound carriageway of the M4 between junctions 32 and 33 was closed through the night Three people have been killed and two more injured, including a six-month-old baby, in a collision on the westbound carriageway of the M4 in south Wales.
South Wales Police said a man in his 50s, and a man and woman in their 20s died in the collision between junctions 32 at Coryton and 33 at Cardiff west.
A woman in her 50s and the baby were also taken to hospital with less serious injuries.
Police said the casualties were all from the Porthcawl area.
The incident occured at 2330 GMT on Monday. The westbound carriageway was closed throughout the night but Traffic Wales said it was expected to reopen at around 0720 on Tuesday.
The eastbound carriageway was also closed temporarily but has since reopened.
Police said the coroner has been informed and liaison officers are supporting the next of kin.
Officers are appealing for witnesses to the single-vehicle collision, involving a red Peugeot 406, or anyone who saw the car beforehand to contact the Roads Policing Unit on 101 or the independent charity Crimestoppers anonymously on 0800 555 111.
In particular police would like to speak urgently to a couple who are thought to have stopped momentarily after the collision.
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