Mid and West Wales Fire Service told ITV News they have left the scene of Thursday's crash, although the dual carriageway remains closed between between Aberdulais and Resolven.
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Gwent Police is appealing for information and calling for extra vigilance after a number of distraction incidents across the area.
Beaumaris Castle on Anglesey will finally be 'completed' over 700 years after it was built, thanks to a £170,000 investment from Cadw.
Residents have been warned to expect 'explosions and blank gunfire' during large scale anti-terror exercises taking place across Wales,