Inspector Michael Edwards from the British Transport Police says cable theft is "an attractive proposition for would-be thieves", but that the police are cracking down on it.
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A man has died of his injuries following an assault in Cardiff during the early hours of Sunday morning.
A 57-year-old driver has died following a collision on the A40 during the early hours of Sunday morning.
People are being advised to avoid the town centre, especially Salop Road.